| Area Code & Prefix | Location |
|---|---|
| 307-200 | Casper, Wyoming |
| 307-201 | Cheyenne, Wyoming |
| 307-202 | Powell, Wyoming |
| 307-203 | Casper, Wyoming |
| 307-212 | Cheyenne, Wyoming |
| 307-213 | Casper, Wyoming |
| 307-214 | Cheyenne, Wyoming |
| 307-215 | Casper, Wyoming |
| 307-216 | Lusk, Wyoming |
| 307-217 | Buffalo, Wyoming |
| 307-220 | Cheyenne, Wyoming |
| 307-221 | Cheyenne, Wyoming |
| 307-222 | Cheyenne, Wyoming |
| 307-223 | Cheyenne, Wyoming |
| 307-224 | Casper, Wyoming |
| 307-230 | Casper, Wyoming |
| 307-231 | Pinedale, Wyoming |
| 307-232 | Casper, Wyoming |
| 307-233 | Casper, Wyoming |
| 307-234 | Casper, Wyoming |
| 307-235 | Casper, Wyoming |
| 307-237 | Casper, Wyoming |
| 307-240 | Cheyenne, Wyoming |
| 307-241 | Wheatland, Wyoming |
| 307-242 | Lake, Wyoming |
| 307-245 | Pine Bluffs, Wyoming |
| 307-246 | Albin, Wyoming |
| 307-247 | Casper, Wyoming |
| 307-248 | Afton, Wyoming |
| 307-250 | Cody, Wyoming |
| 307-251 | Casper, Wyoming |
| 307-252 | Rock Springs, Wyoming |
| 307-253 | Casper, Wyoming |
| 307-254 | Casper, Wyoming |
| 307-255 | Evanston, Wyoming |
| 307-256 | Cheyenne, Wyoming |
| 307-257 | Casper, Wyoming |
| 307-258 | Casper, Wyoming |
| 307-259 | Casper, Wyoming |
| 307-260 | Big Piney, Wyoming |
| 307-261 | Casper, Wyoming |
| 307-262 | Casper, Wyoming |
| 307-264 | Casper, Wyoming |
| 307-265 | Casper, Wyoming |
| 307-266 | Casper, Wyoming |
| 307-267 | Casper, Wyoming |
| 307-268 | Casper, Wyoming |
| 307-269 | Cheyenne, Wyoming |
| 307-270 | Mountain View, Wyoming |
| 307-271 | Casper, Wyoming |
| 307-272 | Cody, Wyoming |
| 307-273 | Farson, Wyoming |
| 307-274 | Cheyenne, Wyoming |
| 307-275 | Cheyenne, Wyoming |
| 307-276 | Big Piney, Wyoming |
| 307-277 | Casper, Wyoming |
| 307-278 | Buffalo, Wyoming |
| 307-279 | Cokeville, Wyoming |
| 307-280 | Farson, Wyoming |
| 307-281 | Sundance, Wyoming |
| 307-282 | Sundance, Wyoming |
| 307-283 | Sundance, Wyoming |
| 307-286 | Cheyenne, Wyoming |
| 307-287 | Cheyenne, Wyoming |
| 307-288 | Cheyenne, Wyoming |
| 307-290 | Sundance, Wyoming |
| 307-292 | Cody, Wyoming |
| 307-296 | Cody, Wyoming |
| 307-297 | Green River, Wyoming |
| 307-298 | Casper, Wyoming |
| 307-299 | Gillette, Wyoming |
| 307-309 | Glenrock, Wyoming |
| 307-312 | Spearfish, Wyoming |
| 307-313 | Cheyenne, Wyoming |
| 307-314 | Laramie, Wyoming |
| 307-315 | Casper, Wyoming |
| 307-316 | Cheyenne, Wyoming |
| 307-320 | Mountain View, Wyoming |
| 307-321 | Cheyenne, Wyoming |
| 307-322 | Wheatland, Wyoming |
| 307-324 | Rawlins, Wyoming |
| 307-328 | Rawlins, Wyoming |
| 307-329 | Mountain View, Wyoming |
| 307-330 | Lander, Wyoming |
| 307-331 | Cheyenne, Wyoming |
| 307-332 | Lander, Wyoming |
| 307-333 | Casper, Wyoming |
| 307-334 | Lusk, Wyoming |
| 307-335 | Lander, Wyoming |
| 307-337 | Casper, Wyoming |
| 307-338 | Torrington, Wyoming |
| 307-339 | Mountain View, Wyoming |
| 307-340 | Cheyenne, Wyoming |
| 307-341 | Wyola, Wyoming |
| 307-343 | Cheyenne, Wyoming |
| 307-344 | Mammoth, Wyoming |
| 307-345 | Lander, Wyoming |
| 307-347 | Worland, Wyoming |
| 307-349 | Cheyenne, Wyoming |
| 307-350 | Mountain View, Wyoming |
| 307-351 | Douglas, Wyoming |
| 307-352 | Rock Springs, Wyoming |
| 307-353 | Driggs, Wyoming |
| 307-354 | Mountain View, Wyoming |
| 307-358 | Douglas, Wyoming |
| 307-359 | Cheyenne, Wyoming |
| 307-360 | Mountain View, Wyoming |
| 307-362 | Rock Springs, Wyoming |
| 307-363 | Gillette, Wyoming |
| 307-365 | Cheyenne, Wyoming |
| 307-366 | Basin, Wyoming |
| 307-367 | Pinedale, Wyoming |
| 307-369 | Cheyenne, Wyoming |
| 307-370 | Cheyenne, Wyoming |
| 307-371 | Cheyenne, Wyoming |
| 307-373 | Basin, Wyoming |
| 307-375 | Worland, Wyoming |
| 307-377 | Casper, Wyoming |
| 307-379 | Medicine Bow, Wyoming |
| 307-380 | Baggs, Wyoming |
| 307-382 | Rock Springs, Wyoming |
| 307-383 | Baggs, Wyoming |
| 307-388 | Worland, Wyoming |
| 307-389 | Cheyenne, Wyoming |
| 307-390 | Mountain View, Wyoming |
| 307-391 | Moorcroft, Wyoming |
| 307-392 | Boise, Wyoming |
| 307-399 | Cheyenne, Wyoming |
| 307-401 | Torrington, Wyoming |
| 307-413 | Jackson, Wyoming |
| 307-417 | Rawlins, Wyoming |
| 307-421 | Cheyenne, Wyoming |
| 307-422 | Chugwater, Wyoming |
| 307-425 | Buffalo, Wyoming |
| 307-426 | Cheyenne, Wyoming |
| 307-429 | Story, Wyoming |
| 307-431 | Worland, Wyoming |
| 307-432 | Cheyenne, Wyoming |
| 307-433 | Cheyenne, Wyoming |
| 307-436 | Glenrock, Wyoming |
| 307-437 | Midwest, Wyoming |
| 307-438 | Cheyenne, Wyoming |
| 307-439 | Casper, Wyoming |
| 307-440 | Basin, Wyoming |
| 307-441 | Casper, Wyoming |
| 307-444 | Evanston, Wyoming |
| 307-448 | Cheyenne, Wyoming |
| 307-450 | Dubois, Wyoming |
| 307-455 | Dubois, Wyoming |
| 307-459 | Cheyenne, Wyoming |
| 307-460 | Cheyenne, Wyoming |
| 307-461 | Casper, Wyoming |
| 307-462 | Casper, Wyoming |
| 307-463 | Casper, Wyoming |
| 307-464 | Wright, Wyoming |
| 307-465 | Osage, Wyoming |
| 307-466 | Cheyenne, Wyoming |
| 307-467 | Hulett, Wyoming |
| 307-468 | Upton, Wyoming |
| 307-469 | Basin, Wyoming |
| 307-472 | Casper, Wyoming |
| 307-473 | Casper, Wyoming |
| 307-477 | Cheyenne, Wyoming |
| 307-480 | Thermopolis, Wyoming |
| 307-481 | Lusk, Wyoming |
| 307-486 | Crowheart, Wyoming |
| 307-497 | Evanston, Wyoming |
| 307-509 | Cheyenne, Wyoming |
| 307-514 | Cheyenne, Wyoming |
| 307-520 | Medicine Bow, Wyoming |
| 307-527 | Cody, Wyoming |
| 307-529 | Cheyenne, Wyoming |
| 307-532 | Torrington, Wyoming |
| 307-533 | Story, Wyoming |
| 307-534 | Torrington, Wyoming |
| 307-537 | Pinedale, Wyoming |
| 307-540 | Jeffrey City, Wyoming |
| 307-541 | Moran, Wyoming |
| 307-543 | Moran, Wyoming |
| 307-544 | Jeffrey City, Wyoming |
| 307-545 | Old Faithful, Wyoming |
| 307-547 | Burns, Wyoming |
| 307-548 | Basin, Wyoming |
| 307-549 | Mountain View, Wyoming |
| 307-554 | Glenrock, Wyoming |
| 307-555 | Cheyenne, Wyoming |
| 307-567 | Gillette, Wyoming |
| 307-568 | Basin, Wyoming |
| 307-575 | Torrington, Wyoming |
| 307-576 | Driggs, Wyoming |
| 307-577 | Casper, Wyoming |
| 307-578 | Cody, Wyoming |
| 307-586 | Cody, Wyoming |
| 307-587 | Cody, Wyoming |
| 307-600 | Rock Springs, Wyoming |
| 307-620 | Buffalo, Wyoming |
| 307-621 | Buffalo, Wyoming |
| 307-622 | Gillette, Wyoming |
| 307-624 | Douglas, Wyoming |
| 307-629 | Newcastle, Wyoming |
| 307-630 | Cheyenne, Wyoming |
| 307-631 | Cheyenne, Wyoming |
| 307-632 | Cheyenne, Wyoming |
| 307-633 | Cheyenne, Wyoming |
| 307-634 | Cheyenne, Wyoming |
| 307-635 | Cheyenne, Wyoming |
| 307-637 | Cheyenne, Wyoming |
| 307-638 | Cheyenne, Wyoming |
| 307-640 | Cheyenne, Wyoming |
| 307-643 | Spearfish, Wyoming |
| 307-645 | Clark, Wyoming |
| 307-649 | Carpenter, Wyoming |
| 307-650 | Cheyenne, Wyoming |
| 307-654 | Freedom, Wyoming |
| 307-655 | Dayton-ranchester, Wyoming |
| 307-656 | Freedom, Wyoming |
| 307-660 | Gillette, Wyoming |
| 307-663 | Edgemont, Wyoming |
| 307-664 | Basin, Wyoming |
| 307-670 | Campbell County, Wyoming |
| 307-672 | Sheridan, Wyoming |
| 307-673 | Sheridan, Wyoming |
| 307-674 | Sheridan, Wyoming |
| 307-675 | Sheridan, Wyoming |
| 307-677 | Cheyenne, Wyoming |
| 307-679 | Cheyenne, Wyoming |
| 307-680 | Gillette, Wyoming |
| 307-681 | Gillette, Wyoming |
| 307-682 | Gillette, Wyoming |
| 307-683 | Story, Wyoming |
| 307-684 | Buffalo, Wyoming |
| 307-685 | Gillette, Wyoming |
| 307-686 | Gillette, Wyoming |
| 307-687 | Gillette, Wyoming |
| 307-688 | Gillette, Wyoming |
| 307-689 | Campbell County, Wyoming |
| 307-690 | Cheyenne, Wyoming |
| 307-696 | Gillette, Wyoming |
| 307-699 | Cheyenne, Wyoming |
| 307-701 | Cheyenne, Wyoming |
| 307-702 | Casper, Wyoming |
| 307-703 | Laramie, Wyoming |
| 307-704 | Gillette, Wyoming |
| 307-705 | Mountain View, Wyoming |
| 307-706 | Mountain View, Wyoming |
| 307-707 | Green River, Wyoming |
| 307-708 | Evanston, Wyoming |
| 307-709 | Mountain View, Wyoming |
| 307-710 | Mountain View, Wyoming |
| 307-712 | Cody, Wyoming |
| 307-713 | Jackson, Wyoming |
| 307-714 | Lander, Wyoming |
| 307-715 | Mountain View, Wyoming |
| 307-716 | Mountain View, Wyoming |
| 307-717 | Douglas, Wyoming |
| 307-718 | Mountain View, Wyoming |
| 307-719 | Buffalo, Wyoming |
| 307-720 | Mountain View, Wyoming |
| 307-721 | Laramie, Wyoming |
| 307-722 | Mountain View, Wyoming |
| 307-723 | Kemmerer, Wyoming |
| 307-724 | Casper, Wyoming |
| 307-727 | Kemmerer, Wyoming |
| 307-728 | Mountain View, Wyoming |
| 307-730 | Jackson, Wyoming |
| 307-731 | Basin, Wyoming |
| 307-732 | Jackson, Wyoming |
| 307-733 | Jackson, Wyoming |
| 307-734 | Jackson, Wyoming |
| 307-735 | Glendo, Wyoming |
| 307-736 | Arvada, Wyoming |
| 307-737 | Sheridan, Wyoming |
| 307-739 | Jackson, Wyoming |
| 307-740 | Jackson, Wyoming |
| 307-741 | Glenrock, Wyoming |
| 307-742 | Laramie, Wyoming |
| 307-744 | Mountain View, Wyoming |
| 307-745 | Laramie, Wyoming |
| 307-746 | Newcastle, Wyoming |
| 307-747 | Mountain View, Wyoming |
| 307-749 | Mountain View, Wyoming |
| 307-750 | Decker, Wyoming |
| 307-751 | Story, Wyoming |
| 307-752 | Sheridan, Wyoming |
| 307-754 | Powell, Wyoming |
| 307-755 | Laramie, Wyoming |
| 307-756 | Moorcroft, Wyoming |
| 307-757 | Cheyenne, Wyoming |
| 307-758 | Clearmont, Wyoming |
| 307-759 | Lusk, Wyoming |
| 307-760 | Laramie, Wyoming |
| 307-761 | Laramie, Wyoming |
| 307-762 | Basin, Wyoming |
| 307-763 | Sheridan, Wyoming |
| 307-764 | Powell, Wyoming |
| 307-765 | Basin, Wyoming |
| 307-766 | Laramie, Wyoming |
| 307-771 | Cheyenne, Wyoming |
| 307-772 | Cheyenne, Wyoming |
| 307-773 | Cheyenne, Wyoming |
| 307-774 | Jackson, Wyoming |
| 307-775 | Cheyenne, Wyoming |
| 307-777 | Cheyenne, Wyoming |
| 307-778 | Cheyenne, Wyoming |
| 307-779 | Mountain View, Wyoming |
| 307-780 | Mountain View, Wyoming |
| 307-782 | Mountain View, Wyoming |
| 307-783 | Evanston, Wyoming |
| 307-788 | Lyman, Wyoming |
| 307-789 | Evanston, Wyoming |
| 307-790 | Mountain View, Wyoming |
| 307-797 | Casper, Wyoming |
| 307-798 | Mountain View, Wyoming |
| 307-799 | Evanston, Wyoming |
| 307-800 | Kemmerer, Wyoming |
| 307-823 | Cheyenne, Wyoming |
| 307-828 | Kemmerer, Wyoming |
| 307-834 | La Grange, Wyoming |
| 307-836 | Guernsey, Wyoming |
| 307-837 | Lingle, Wyoming |
| 307-840 | Cheyenne, Wyoming |
| 307-849 | Montpelier, Wyoming |
| 307-850 | Mountain View, Wyoming |
| 307-851 | Cheyenne, Wyoming |
| 307-854 | Riverton, Wyoming |
| 307-855 | Riverton, Wyoming |
| 307-856 | Riverton, Wyoming |
| 307-857 | Riverton, Wyoming |
| 307-858 | Mountain View, Wyoming |
| 307-859 | Pinedale, Wyoming |
| 307-864 | Thermopolis, Wyoming |
| 307-867 | Basin, Wyoming |
| 307-868 | Basin, Wyoming |
| 307-870 | Green River, Wyoming |
| 307-871 | Cheyenne, Wyoming |
| 307-872 | Green River, Wyoming |
| 307-875 | Green River, Wyoming |
| 307-876 | Shoshoni, Wyoming |
| 307-877 | Kemmerer, Wyoming |
| 307-878 | Alzada, Wyoming |
| 307-880 | Freedom, Wyoming |
| 307-883 | Freedom, Wyoming |
| 307-884 | Afton, Wyoming |
| 307-885 | Freedom, Wyoming |
| 307-886 | Afton, Wyoming |
| 307-887 | Afton, Wyoming |
| 307-890 | Freedom, Wyoming |
| 307-896 | Belle Fourche, Wyoming |
| 307-899 | Cody, Wyoming |
| 307-920 | Cheyenne, Wyoming |
| 307-921 | Thermopolis, Wyoming |
| 307-922 | Cheyenne, Wyoming |
| 307-939 | Wright, Wyoming |
| 307-941 | New Castle, Wyoming |
| 307-949 | New Castle, Wyoming |
| 307-977 | Laramie, Wyoming |
| 307-995 | Casper, Wyoming |
| 307-996 | Cheyenne, Wyoming |