| City | State | Area Code(s) |
| Cohasset | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cohoctah | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Cohocton | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cohoes | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cohutta | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Coila | MS | Mississippi Area Code(s): 228 601 662 |
| Coin | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Coinjock | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Cokato | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cokeburg | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coker | AL | Alabama Area Code(s): 205 251 256 334 |
| Cokercreek | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cokeville | WY | Wyoming Area Code(s): 208 307 |
| Colbert | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Colbert | OK | Oklahoma Area Code(s): 405 580 918 |
| Colbert | WA | Washington Area Code(s): 206 253 360 425 509 |
| Colburn | ID | Idaho Area Code(s): 208 |
| Colby | KS | Kansas Area Code(s): 316 620 785 913 |
| Colby | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Colchester | CT | Connecticut Area Code(s): 203 860 |
| Colchester | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Colchester | VT | Vermont Area Code(s): 802 |
| Colcord | OK | Oklahoma Area Code(s): 405 580 918 |
| Colcord | WV | West Virginia Area Code(s): 304 |
| Cold Bay | AK | Alaska Area Code(s): 907 |
| Cold Brook | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cold Spring Harbor | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cold Spring | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cold Spring | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Colden | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Coldiron | KY | Kentucky Area Code(s): 270 502 606 859 |
| Coldspring | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coldwater | KS | Kansas Area Code(s): 316 620 785 913 |
| Coldwater | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Coldwater | MS | Mississippi Area Code(s): 228 601 662 |
| Coldwater | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Cole Camp | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Colebrook | CT | Connecticut Area Code(s): 203 860 |
| Colebrook | NH | New Hampshire Area Code(s): 603 |
| Coleharbor | ND | North Dakota Area Code(s): 701 |
| Coleman Falls | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Coleman | FL | Florida Area Code(s): 239 305 321 352 386 407 561 727 772 813 850 863 904 941 954 |
| Coleman | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Coleman | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Coleman | OK | Oklahoma Area Code(s): 405 580 918 |
| Coleman | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coleman | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Colerain | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Colerain | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Coleraine | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Coleridge | NE | Nebraska Area Code(s): 308 402 |
| Coles Point | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Colesburg | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Coleville | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Colfax | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Colfax | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Colfax | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Colfax | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Colfax | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Colfax | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Colfax | ND | North Dakota Area Code(s): 701 |
| Colfax | WA | Washington Area Code(s): 206 253 360 425 509 |
| Colfax | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Colfax | WV | West Virginia Area Code(s): 304 |
| Colgate | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Collbran | CO | Colorado Area Code(s): 303 719 970 |
| College Corner | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| College Grove | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| College Park | MD | Maryland Area Code(s): 301 410 |
| College Place | WA | Washington Area Code(s): 206 253 360 425 509 |
| College Point | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| College Springs | IA | Iowa Area Code(s): 319 515 563 641 712 |
| College Station | AR | Arkansas Area Code(s): 479 501 870 |
| College Station | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Collegedale | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Collegeport | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Collegeville | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Collegeville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Collettsville | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Colleyville | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Colliers | WV | West Virginia Area Code(s): 304 |
| Colliersville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Collierville | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Collingswood | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Collins Center | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Collins | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Collins | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Collins | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Collins | MS | Mississippi Area Code(s): 228 601 662 |
| Collins | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Collins | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Collins | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Collinston | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Collinston | UT | Utah Area Code(s): 435 801 |
| Collinsville | AL | Alabama Area Code(s): 205 251 256 334 |
| Collinsville | CT | Connecticut Area Code(s): 203 860 |
| Collinsville | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Collinsville | MS | Mississippi Area Code(s): 228 601 662 |
| Collinsville | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Collinsville | OK | Oklahoma Area Code(s): 405 580 918 |
| Collinsville | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Collinsville | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Collinwood | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Collison | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Collyer | KS | Kansas Area Code(s): 316 620 785 913 |
| Colman | SD | South Dakota Area Code(s): 605 |
| Colmar | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Colmesneil | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Colo | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Cologne | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cologne | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Coloma | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coloma | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Coloma | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Colome | SD | South Dakota Area Code(s): 605 |
| Colon | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Colon | NE | Nebraska Area Code(s): 308 402 |
| Colona | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Colonia | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Colonial Beach | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Colonial Heights | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Colony | KS | Kansas Area Code(s): 316 620 785 913 |
| Colony | OK | Oklahoma Area Code(s): 405 580 918 |
| Colora | MD | Maryland Area Code(s): 301 410 |
| Colorado City | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Colorado City | CO | Colorado Area Code(s): 303 719 970 |
| Colorado City | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Colorado Springs | CO | Colorado Area Code(s): 303 719 970 |
| Colp | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Colquitt | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Colrain | MA | Massachusetts Area Code(s): 413 508 617 781 978 |
| Colstrip | MT | Montana Area Code(s): 406 |
| Colt | AR | Arkansas Area Code(s): 479 501 870 |
| Colton | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Colton | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Colton | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Colton | OR | Oregon Area Code(s): 503 541 |
| Colton | SD | South Dakota Area Code(s): 605 |
| Colton | WA | Washington Area Code(s): 206 253 360 425 509 |
| Coltons Point | MD | Maryland Area Code(s): 301 410 |
| Colts Neck | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Columbia City | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Columbia City | OR | Oregon Area Code(s): 503 541 |
| Columbia Cross Roads | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Columbia Falls | ME | Maine Area Code(s): 207 |
| Columbia Falls | MT | Montana Area Code(s): 406 |
| Columbia Station | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Columbia | AL | Alabama Area Code(s): 205 251 256 334 |
| Columbia | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Columbia | CT | Connecticut Area Code(s): 203 860 |
| Columbia | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Columbia | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Columbia | KY | Kentucky Area Code(s): 270 502 606 859 |
| Columbia | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Columbia | MD | Maryland Area Code(s): 301 410 |
| Columbia | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Columbia | MS | Mississippi Area Code(s): 228 601 662 |
| Columbia | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Columbia | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Columbia | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Columbia | SC | South Carolina Area Code(s): 803 843 864 |
| Columbia | SD | South Dakota Area Code(s): 605 |
| Columbia | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Columbia | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Columbiana | AL | Alabama Area Code(s): 205 251 256 334 |
| Columbiana | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Columbiaville | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Columbiaville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Columbus City | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Columbus Grove | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Columbus Junction | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Columbus | AR | Arkansas Area Code(s): 479 501 870 |
| Columbus | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Columbus | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Columbus | KS | Kansas Area Code(s): 316 620 785 913 |
| Columbus | KY | Kentucky Area Code(s): 270 502 606 859 |
| Columbus | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Columbus | MS | Mississippi Area Code(s): 228 601 662 |
| Columbus | MT | Montana Area Code(s): 406 |
| Columbus | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Columbus | ND | North Dakota Area Code(s): 701 |
| Columbus | NE | Nebraska Area Code(s): 308 402 |
| Columbus | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Columbus | NM | New Mexico Area Code(s): 505 |
| Columbus | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Columbus | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Columbus | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Columbus | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Colusa | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Colusa | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Colver | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Colville | WA | Washington Area Code(s): 206 253 360 425 509 |
| Colwell | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Colwich | KS | Kansas Area Code(s): 316 620 785 913 |
| Comanche | OK | Oklahoma Area Code(s): 405 580 918 |
| Comanche | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Combes | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Combined Locks | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Combs | AR | Arkansas Area Code(s): 479 501 870 |
| Combs | KY | Kentucky Area Code(s): 270 502 606 859 |
| Comer | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Comerio | PR | Puerto Rico Area Code(s): 787 |
| Comfort | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Comfort | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Comfort | WV | West Virginia Area Code(s): 304 |
| Comfrey | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Comins | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Commack | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Commerce City | CO | Colorado Area Code(s): 303 719 970 |
| Commerce Township | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Commerce | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Commerce | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Commerce | OK | Oklahoma Area Code(s): 405 580 918 |
| Commerce | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Commercial Point | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Commiskey | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Commodore | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Como | CO | Colorado Area Code(s): 303 719 970 |
| Como | MS | Mississippi Area Code(s): 228 601 662 |
| Como | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Como | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Como | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Comptche | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Compton | AR | Arkansas Area Code(s): 479 501 870 |
| Compton | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Compton | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Compton | MD | Maryland Area Code(s): 301 410 |
| Comstock Park | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Comstock | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Comstock | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Comstock | NE | Nebraska Area Code(s): 308 402 |
| Comstock | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Comstock | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Comstock | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Conasauga | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Concan | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Concepcion | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Conception Junction | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Conception | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Conchas Dam | NM | New Mexico Area Code(s): 505 |
| Concho | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Concho | OK | Oklahoma Area Code(s): 405 580 918 |
| Conconully | WA | Washington Area Code(s): 206 253 360 425 509 |
| Concord | AR | Arkansas Area Code(s): 479 501 870 |
| Concord | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Concord | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Concord | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Concord | MA | Massachusetts Area Code(s): 413 508 617 781 978 |
| Concord | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Concord | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Concord | NE | Nebraska Area Code(s): 308 402 |
| Concord | NH | New Hampshire Area Code(s): 603 |
| Concord | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Concord | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Concord | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Concord | VT | Vermont Area Code(s): 802 |
| Concordia | KS | Kansas Area Code(s): 316 620 785 913 |
| Concordia | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Concordville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Concrete | WA | Washington Area Code(s): 206 253 360 425 509 |
| Conda | ID | Idaho Area Code(s): 208 |
| Conde | SD | South Dakota Area Code(s): 605 |
| Condon | MT | Montana Area Code(s): 406 |
| Condon | OR | Oregon Area Code(s): 503 541 |
| Conehatta | MS | Mississippi Area Code(s): 228 601 662 |
| Conejos | CO | Colorado Area Code(s): 303 719 970 |
| Conestee | SC | South Carolina Area Code(s): 803 843 864 |
| Conestoga | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Conesus | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Conesville | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Conesville | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Conetoe | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Conewango Valley | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Confluence | KY | Kentucky Area Code(s): 270 502 606 859 |
| Confluence | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Conger | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Congers | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Congerville | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Congress | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Conifer | CO | Colorado Area Code(s): 303 719 970 |
| Conklin | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Conklin | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Conley | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Conneaut Lake | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Conneaut | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Conneautville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Connell | WA | Washington Area Code(s): 206 253 360 425 509 |
| Connellsville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Connelly | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Connellys Springs | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Conner | MT | Montana Area Code(s): 406 |
| Connersville | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Connerville | OK | Oklahoma Area Code(s): 405 580 918 |
| Connoquenessing | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Conover | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Conover | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Conover | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Conowingo | MD | Maryland Area Code(s): 301 410 |
| Conrad | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Conrad | MT | Montana Area Code(s): 406 |
| Conran | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Conrath | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Conroe | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Conroy | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Conshohocken | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Constable | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Constableville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Constantia | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Constantine | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Continental Divide | NM | New Mexico Area Code(s): 505 |
| Continental | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Contoocook | NH | New Hampshire Area Code(s): 603 |
| Convent | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Converse | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Converse | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Converse | SC | South Carolina Area Code(s): 803 843 864 |
| Converse | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Convoy | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Conway Springs | KS | Kansas Area Code(s): 316 620 785 913 |
| Conway | AR | Arkansas Area Code(s): 479 501 870 |
| Conway | MA | Massachusetts Area Code(s): 413 508 617 781 978 |
| Conway | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Conway | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Conway | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Conway | NH | New Hampshire Area Code(s): 603 |
| Conway | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Conway | SC | South Carolina Area Code(s): 803 843 864 |
| Conway | WA | Washington Area Code(s): 206 253 360 425 509 |
| Conyers | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Conyngham | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cook Springs | AL | Alabama Area Code(s): 205 251 256 334 |
| Cook Station | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Cook | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cook | NE | Nebraska Area Code(s): 308 402 |
| Cooke City | MT | Montana Area Code(s): 406 |
| Cookeville | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cooks | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Cooksburg | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cookson | OK | Oklahoma Area Code(s): 405 580 918 |
| Cookstown | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Cooksville | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cooksville | MD | Maryland Area Code(s): 301 410 |
| Cookville | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Cool Ridge | WV | West Virginia Area Code(s): 304 |
| Cool | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Cooleemee | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Coolidge | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Coolidge | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Coolidge | KS | Kansas Area Code(s): 316 620 785 913 |
| Coolidge | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coolin | ID | Idaho Area Code(s): 208 |
| Coolspring | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coolville | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Coon Rapids | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Coon Valley | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Cooper Landing | AK | Alaska Area Code(s): 907 |
| Cooper | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Cooper | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coopers Mills | ME | Maine Area Code(s): 207 |
| Coopers Plains | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Coopersburg | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cooperstown | ND | North Dakota Area Code(s): 701 |
| Cooperstown | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cooperstown | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coopersville | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Coos Bay | OR | Oregon Area Code(s): 503 541 |
| Coosa | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Coosada | AL | Alabama Area Code(s): 205 251 256 334 |
| Coosawatchie | SC | South Carolina Area Code(s): 803 843 864 |
| Cooter | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Copake Falls | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Copake | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Copalis Beach | WA | Washington Area Code(s): 206 253 360 425 509 |
| Copalis Crossing | WA | Washington Area Code(s): 206 253 360 425 509 |
| Copan | OK | Oklahoma Area Code(s): 405 580 918 |
| Cope | CO | Colorado Area Code(s): 303 719 970 |
| Cope | SC | South Carolina Area Code(s): 803 843 864 |
| Copeland | FL | Florida Area Code(s): 239 305 321 352 386 407 561 727 772 813 850 863 904 941 954 |
| Copeland | KS | Kansas Area Code(s): 316 620 785 913 |
| Copemish | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Copen | WV | West Virginia Area Code(s): 304 |
| Copenhagen | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Copeville | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Copiague | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Coplay | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coppell | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Copper Center | AK | Alaska Area Code(s): 907 |
| Copper City | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Copper Harbor | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Copper Hill | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Copperas Cove | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Copperhill | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Copperopolis | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coquille | OR | Oregon Area Code(s): 503 541 |
| Cora | WV | West Virginia Area Code(s): 304 |
| Cora | WY | Wyoming Area Code(s): 208 307 |
| Coral | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Coral | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coralville | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Coram | MT | Montana Area Code(s): 406 |
| Coram | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Coraopolis | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Corapeake | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Corbett | OR | Oregon Area Code(s): 503 541 |
| Corbettsville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corbin | KY | Kentucky Area Code(s): 270 502 606 859 |
| Corbin | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Corcoran | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Cord | AR | Arkansas Area Code(s): 479 501 870 |
| Cordele | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Cordell | OK | Oklahoma Area Code(s): 405 580 918 |
| Corder | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Cordesville | SC | South Carolina Area Code(s): 803 843 864 |
| Cordova | AK | Alaska Area Code(s): 907 |
| Cordova | AL | Alabama Area Code(s): 205 251 256 334 |
| Cordova | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cordova | MD | Maryland Area Code(s): 301 410 |
| Cordova | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Cordova | NE | Nebraska Area Code(s): 308 402 |
| Cordova | NM | New Mexico Area Code(s): 505 |
| Cordova | SC | South Carolina Area Code(s): 803 843 864 |
| Cordova | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Core | WV | West Virginia Area Code(s): 304 |
| Corea | ME | Maine Area Code(s): 207 |
| Corfu | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corinna | ME | Maine Area Code(s): 207 |
| Corinne | UT | Utah Area Code(s): 435 801 |
| Corinne | WV | West Virginia Area Code(s): 304 |
| Corinth | KY | Kentucky Area Code(s): 270 502 606 859 |
| Corinth | ME | Maine Area Code(s): 207 |
| Corinth | MS | Mississippi Area Code(s): 228 601 662 |
| Corinth | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corinth | VT | Vermont Area Code(s): 802 |
| Corn | OK | Oklahoma Area Code(s): 405 580 918 |
| Cornelia | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Cornelius | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Cornelius | OR | Oregon Area Code(s): 503 541 |
| Cornell | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cornell | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Cornell | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Cornersville | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cornettsville | KY | Kentucky Area Code(s): 270 502 606 859 |
| Corning | AR | Arkansas Area Code(s): 479 501 870 |
| Corning | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Corning | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Corning | KS | Kansas Area Code(s): 316 620 785 913 |
| Corning | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corning | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Cornish Flat | NH | New Hampshire Area Code(s): 603 |
| Cornish | ME | Maine Area Code(s): 207 |
| Cornish | NH | New Hampshire Area Code(s): 603 |
| Cornish | UT | Utah Area Code(s): 435 801 |
| Cornland | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cornucopia | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Cornville | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Cornwall Bridge | CT | Connecticut Area Code(s): 203 860 |
| Cornwall On Hudson | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cornwall | CT | Connecticut Area Code(s): 203 860 |
| Cornwall | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cornwall | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cornwallville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corolla | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Corona Del Mar | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Corona | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Corona | NM | New Mexico Area Code(s): 505 |
| Corona | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corona | SD | South Dakota Area Code(s): 605 |
| Coronado | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Corozal | PR | Puerto Rico Area Code(s): 787 |
| Corpus Christi | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Corral | ID | Idaho Area Code(s): 208 |
| Corrales | NM | New Mexico Area Code(s): 505 |
| Correctionville | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Correll | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Corrigan | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Corriganville | MD | Maryland Area Code(s): 301 410 |
| Corry | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Corryton | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Corsica | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Corsica | SD | South Dakota Area Code(s): 605 |
| Corsicana | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Cortaro | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Corte Madera | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Cortez | CO | Colorado Area Code(s): 303 719 970 |
| Cortez | FL | Florida Area Code(s): 239 305 321 352 386 407 561 727 772 813 850 863 904 941 954 |
| Cortland | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cortland | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Cortland | NE | Nebraska Area Code(s): 308 402 |
| Cortland | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cortland | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Cortlandt Manor | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Corunna | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Corunna | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Corvallis | MT | Montana Area Code(s): 406 |
| Corvallis | OR | Oregon Area Code(s): 503 541 |
| Corwith | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Cory | CO | Colorado Area Code(s): 303 719 970 |
| Cory | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Corydon | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Corydon | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Corydon | KY | Kentucky Area Code(s): 270 502 606 859 |
| Cos Cob | CT | Connecticut Area Code(s): 203 860 |
| Cosby | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Cosby | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Coshocton | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Cosmopolis | WA | Washington Area Code(s): 206 253 360 425 509 |
| Cosmos | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cossayuna | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cost | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Costa Mesa | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Costa | WV | West Virginia Area Code(s): 304 |
| Costigan | ME | Maine Area Code(s): 207 |
| Costilla | NM | New Mexico Area Code(s): 505 |
| Cotati | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coto Laurel | PR | Puerto Rico Area Code(s): 787 |
| Cotopaxi | CO | Colorado Area Code(s): 303 719 970 |
| Cottage Grove | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cottage Grove | OR | Oregon Area Code(s): 503 541 |
| Cottage Grove | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cottage Grove | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Cottage Hills | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cottageville | SC | South Carolina Area Code(s): 803 843 864 |
| Cottageville | WV | West Virginia Area Code(s): 304 |
| Cottekill | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cotter | AR | Arkansas Area Code(s): 479 501 870 |
| Cottleville | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Cotton Center | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Cotton Plant | AR | Arkansas Area Code(s): 479 501 870 |
| Cotton Valley | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Cotton | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Cotton | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cottondale | AL | Alabama Area Code(s): 205 251 256 334 |
| Cottondale | FL | Florida Area Code(s): 239 305 321 352 386 407 561 727 772 813 850 863 904 941 954 |
| Cottonport | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Cottonton | AL | Alabama Area Code(s): 205 251 256 334 |
| Cottontown | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cottonwood Falls | KS | Kansas Area Code(s): 316 620 785 913 |
| Cottonwood | AL | Alabama Area Code(s): 205 251 256 334 |
| Cottonwood | AZ | Arizona Area Code(s): 480 520 602 623 928 |
| Cottonwood | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Cottonwood | ID | Idaho Area Code(s): 208 |
| Cottonwood | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Cotuit | MA | Massachusetts Area Code(s): 413 508 617 781 978 |
| Cotulla | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Couch | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Couderay | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Coudersport | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cougar | WA | Washington Area Code(s): 206 253 360 425 509 |
| Coulee City | WA | Washington Area Code(s): 206 253 360 425 509 |
| Coulee Dam | WA | Washington Area Code(s): 206 253 360 425 509 |
| Coulter | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Coulters | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coulterville | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coulterville | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Counce | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Council Bluffs | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Council Grove | KS | Kansas Area Code(s): 316 620 785 913 |
| Council Hill | OK | Oklahoma Area Code(s): 405 580 918 |
| Council | ID | Idaho Area Code(s): 208 |
| Council | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Counselor | NM | New Mexico Area Code(s): 505 |
| Country Club Hills | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Countyline | OK | Oklahoma Area Code(s): 405 580 918 |
| Coupeville | WA | Washington Area Code(s): 206 253 360 425 509 |
| Coupland | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coupon | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Courtenay | ND | North Dakota Area Code(s): 701 |
| Courtland | AL | Alabama Area Code(s): 205 251 256 334 |
| Courtland | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Courtland | KS | Kansas Area Code(s): 316 620 785 913 |
| Courtland | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Courtland | MS | Mississippi Area Code(s): 228 601 662 |
| Courtland | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Coushatta | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Cove City | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Cove | AR | Arkansas Area Code(s): 479 501 870 |
| Cove | OR | Oregon Area Code(s): 503 541 |
| Covel | WV | West Virginia Area Code(s): 304 |
| Covelo | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coventry | CT | Connecticut Area Code(s): 203 860 |
| Coventry | RI | Rhode Island Area Code(s): 401 |
| Coventry | VT | Vermont Area Code(s): 802 |
| Covert | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Covesville | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Covina | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Covington | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Covington | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Covington | KY | Kentucky Area Code(s): 270 502 606 859 |
| Covington | LA | Louisiana Area Code(s): 225 318 337 504 985 |
| Covington | MI | Michigan Area Code(s): 231 248 269 313 517 586 616 734 810 906 989 |
| Covington | OH | Ohio Area Code(s): 216 330 419 440 513 614 740 859 937 |
| Covington | OK | Oklahoma Area Code(s): 405 580 918 |
| Covington | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Covington | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Covington | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Covington | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Cowan | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Cowanesque | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cowansville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Coward | SC | South Carolina Area Code(s): 803 843 864 |
| Cowarts | AL | Alabama Area Code(s): 205 251 256 334 |
| Cowden | IL | Illinois Area Code(s): 217 309 312 618 630 708 773 815 847 |
| Cowdrey | CO | Colorado Area Code(s): 303 719 970 |
| Cowen | WV | West Virginia Area Code(s): 304 |
| Coweta | OK | Oklahoma Area Code(s): 405 580 918 |
| Cowgill | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Cowiche | WA | Washington Area Code(s): 206 253 360 425 509 |
| Cowlesville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cowley | WY | Wyoming Area Code(s): 208 307 |
| Cowpens | SC | South Carolina Area Code(s): 803 843 864 |
| Coxs Creek | KY | Kentucky Area Code(s): 270 502 606 859 |
| Coxs Mills | WV | West Virginia Area Code(s): 304 |
| Coxsackie | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Coy | AL | Alabama Area Code(s): 205 251 256 334 |
| Coy | AR | Arkansas Area Code(s): 479 501 870 |
| Coyanosa | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Coyle | OK | Oklahoma Area Code(s): 405 580 918 |
| Coyote | CA | California Area Code(s): 209 213 310 323 408 415 510 530 559 562 619 626 650 661 707 714 760 805 818 831 858 909 916 925 949 |
| Coyote | NM | New Mexico Area Code(s): 505 |
| Cozad | NE | Nebraska Area Code(s): 308 402 |
| Crab Orchard | KY | Kentucky Area Code(s): 270 502 606 859 |
| Crab Orchard | NE | Nebraska Area Code(s): 308 402 |
| Crab Orchard | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Crab Orchard | WV | West Virginia Area Code(s): 304 |
| Crabtree | OR | Oregon Area Code(s): 503 541 |
| Crabtree | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Craddockville | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Craftsbury Common | VT | Vermont Area Code(s): 802 |
| Craftsbury | VT | Vermont Area Code(s): 802 |
| Cragford | AL | Alabama Area Code(s): 205 251 256 334 |
| Cragsmoor | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Craig | AK | Alaska Area Code(s): 907 |
| Craig | CO | Colorado Area Code(s): 303 719 970 |
| Craig | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Craig | NE | Nebraska Area Code(s): 308 402 |
| Craigmont | ID | Idaho Area Code(s): 208 |
| Craigsville | VA | Virginia Area Code(s): 276 434 540 703 757 804 |
| Craigsville | WV | West Virginia Area Code(s): 304 |
| Craigville | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Craley | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cramerton | NC | North Carolina Area Code(s): 252 336 704 828 910 919 |
| Cranberry Isles | ME | Maine Area Code(s): 207 |
| Cranberry Lake | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Cranberry Twp | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cranberry | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cranbury | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Crandall | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Crandall | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Crandall | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Crandon | WI | Wisconsin Area Code(s): 262 414 608 715 920 |
| Crane Hill | AL | Alabama Area Code(s): 205 251 256 334 |
| Crane Lake | MN | Minnesota Area Code(s): 218 320 507 612 651 763 952 |
| Crane | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Crane | MO | Missouri Area Code(s): 314 417 573 636 660 816 |
| Crane | MT | Montana Area Code(s): 406 |
| Crane | OR | Oregon Area Code(s): 503 541 |
| Crane | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Cranesville | PA | Pennsylvania Area Code(s): 215 412 570 610 717 724 814 |
| Cranfills Gap | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Cranford | NJ | New Jersey Area Code(s): 201 609 732 856 908 973 |
| Cranks | KY | Kentucky Area Code(s): 270 502 606 859 |
| Cranston | RI | Rhode Island Area Code(s): 401 |
| Crapo | MD | Maryland Area Code(s): 301 410 |
| Crary | ND | North Dakota Area Code(s): 701 |
| Craryville | NY | New York Area Code(s): 212 315 516 518 585 607 631 716 718 845 914 |
| Crater Lake | OR | Oregon Area Code(s): 503 541 |
| Crawford | CO | Colorado Area Code(s): 303 719 970 |
| Crawford | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Crawford | MS | Mississippi Area Code(s): 228 601 662 |
| Crawford | NE | Nebraska Area Code(s): 308 402 |
| Crawford | OK | Oklahoma Area Code(s): 405 580 918 |
| Crawford | TN | Tennessee Area Code(s): 423 615 731 865 901 931 |
| Crawford | TX | Texas Area Code(s): 210 214 254 281 325 361 409 432 512 713 806 817 830 903 915 936 940 956 972 979 |
| Crawford | WV | West Virginia Area Code(s): 304 |
| Crawfordsville | AR | Arkansas Area Code(s): 479 501 870 |
| Crawfordsville | IA | Iowa Area Code(s): 319 515 563 641 712 |
| Crawfordsville | IN | Indiana Area Code(s): 219 260 317 574 765 812 |
| Crawfordsville | OR | Oregon Area Code(s): 503 541 |
| Crawfordville | FL | Florida Area Code(s): 239 305 321 352 386 407 561 727 772 813 850 863 904 941 954 |
| Crawfordville | GA | Georgia Area Code(s): 229 404 478 706 770 912 |
| Crawley | WV | West Virginia Area Code(s): 304 |