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307 area code

Area code 307 is in Wyoming (WY), USA and some of the main locations covered are Cheyenne, Casper, Laramie, .. (jump to city list below).

Area code 307 has been in service since January 01, 1947.

05:27:11 AM is the current time in area code 307 (Mountain Time).

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Map of area code 307

NPANXX1 Area served2 Date3
307-200 Jackson 8/16/2002
307-201 Jackson 1/7/2003
307-202 Powell 1/21/2003
307-203 Jackson 3/14/2001
307-204 Cody 2/6/2018
307-205 Lingle 11/16/2016
307-206 Lander 12/5/2013
307-207 Lake 12/6/2018
307-209 Rock Springs 12/19/2014
307-210 Southeast Sheridan 4/3/2020
307-212 Rock Springs 7/16/2002
307-213 Cody 7/16/2002
307-214 Cheyenne 1/6/2003
307-215 Casper 7/26/2001
307-216 Lusk 10/9/2002
307-217 Buffalo 10/9/2002
307-218 Sheridan 8/13/2019
307-219 Powell 3/26/2015
307-220 Cheyenne
307-221 Cheyenne
307-222 Cheyenne
307-223 Laramie
307-224 Casper
307-225 Laramie 9/2/2020
307-226 Afton 12/28/2015
307-227 Mammoth 9/19/2016
307-228 Gillette 5/23/2014
307-229 Cokeville 2/17/2015
307-230 Border 7/19/2022
307-231 Pinedale
307-232 Casper
307-233 Casper
307-234 Casper
307-235 Casper
307-236 Burns 4/3/2020
307-237 Casper
307-238 Hamilton Dome 8/22/2017
307-239 Dubois 11/5/2015
307-240 Riverton
307-241 Wheatland
307-242 Lake
307-243 Casper
307-244 Freedom 5/15/2019
307-245 Pinebluffs
307-246 Albin
307-247 Casper
307-248 Afton 3/25/2003
307-249 Jackson 3/24/2017
307-250 Cody
307-251 Casper 4/13/2006
307-252 Rock Springs
307-253 Casper 3/10/2008
307-254 Powell 9/11/2003
307-255 Evanston 7/15/2002
307-256 Cheyenne 1/5/2004
307-257 Gillette 5/19/2004
307-258 Casper
307-259 Casper
307-260 Big Piney
307-261 Casper
307-262 Casper
307-263 Cheyenne 10/16/2019
307-264 Jackson 3/24/2014
307-265 Casper
307-266 Casper
307-267 Casper
307-268 Casper
307-269 Wheatland
307-270 Cokeville
307-271 Powell 5/26/2004
307-272 Cody
307-273 Farson
307-274 Cheyenne 7/14/2004
307-275 Cheyenne 1/12/2005
307-276 Big Piney
307-277 Casper 8/21/2003
307-278 Buffalo 5/19/2004
307-279 Cokeville
307-280 Farson
307-281 Sundance
307-282 Sundance
307-283 Sundance
307-284 Jackson 11/20/2019
307-285 Buffalo 5/21/2020
307-286 Cheyenne 1/19/2004
307-287 Cheyenne 5/23/2006
307-288 Evanston 5/19/2004
307-290 Sundance
307-291 Cody 10/28/2021
307-292 Cheyenne 6/17/2020
307-293 Guernsey 3/2/2021
307-296 Cody
307-297 Green River
307-298 Douglas 5/19/2004
307-299 Gillette 10/21/2003
307-300 Powell 10/10/2019
307-302 Cody 8/17/2020
307-303 Green River 11/9/2020
307-304 Jeffrey City 9/17/2020
307-305 Midwest 3/5/2021
307-306 Douglas 12/21/2020
307-309 Glenrock 9/8/2006
307-310 Cheyenne 10/23/2019
307-312 West Spearfish 6/19/2012
307-313 Evanston
307-314 Laramie
307-315 Casper 5/11/2007
307-316 Cheyenne 3/20/2006
307-317 Cheyenne 5/22/2017
307-318 Wright 1/15/2021
307-319 Shoshoni 9/17/2020
307-320 Rawlins
307-321 Rawlins
307-322 Wheatland
307-323 Pinedale 7/22/2019
307-324 Rawlins
307-325 Hanna
307-326 Saratoga
307-327 Encampment
307-328 Rawlins
307-329 Saratoga
307-330 Lander
307-331 Wheatland
307-332 Lander
307-333 Casper
307-334 Lusk
307-335 Lander
307-336 Daniel 7/22/2019
307-337 Casper 1/7/2011
307-338 Torrington 1/12/2011
307-339 Hanna
307-340 Lusk
307-341 South Wyola
307-342 Jackson
307-343 Laramie 7/16/2009
307-344 Mammoth
307-345 Lander
307-346 Cheyenne 7/14/2021
307-347 Worland
307-348 Hanna
307-349 Lander
307-350 Rock Springs
307-351 Douglas
307-352 Rock Springs
307-353 Alta
307-354 Rock Springs 3/27/2001
307-355 La Grange 7/29/2020
307-356 Shirley Basin
307-358 Douglas
307-359 Douglas
307-360 Pinedale
307-361 Baggs 3/5/2021
307-362 Rock Springs
307-363 Gillette 8/30/2010
307-364 Green River 5/23/2014
307-365 Cheyenne 3/3/2008
307-366 Ten Sleep
307-367 Pinedale
307-368 Afton 2/10/2021
307-369 Cheyenne 1/10/2011
307-370 Rawlins
307-371 Rock Springs
307-372 Douglas 8/10/2020
307-373 Greybull
307-374 Rock Springs 9/9/2021
307-375 Worland
307-376 Alpine 8/11/2021
307-377 Casper
307-378 Rock River
307-379 Medicine Bow
307-380 Baggs
307-381 Sheridan 4/23/2021
307-382 Rock Springs
307-383 Baggs
307-384 Afton 11/3/2021
307-386 Labarge
307-387 Gillette 10/1/2021
307-388 Worland
307-389 Rock Springs
307-390 Labarge
307-391 Moorcroft 3/14/2005
307-392 Border 6/21/2006
307-393 Evanston 3/31/2021
307-394 Casper 5/21/2021
307-395 Laramie 8/11/2021
307-396 Green River 10/20/2021
307-397 Hanna 11/5/2021
307-398 Labarge 11/5/2021
307-399 Laramie 5/16/2002
307-400 Cheyenne 1/24/2020
307-401 Torrington
307-402 Mt View 11/5/2021
307-403 Moran 2/22/2022
307-404 Medicine Bow 5/23/2018
307-407 West Spearfish 8/10/2020
307-408 Lyman 11/5/2021
307-409 La Grange 2/20/2018
307-410 Powell 3/22/2022
307-413 Jackson 1/29/2001
307-414 Cheyenne 8/24/2015
307-417 Rawlins
307-419 Cody 3/24/2022
307-421 Cheyenne
307-422 Chugwater
307-423 Buffalo 11/5/2021
307-425 Buffalo 3/30/2011
307-426 Cheyenne 5/22/2007
307-429 Sheridan 5/23/2013
307-431 Worland
307-432 Cheyenne
307-433 Cheyenne
307-436 Glenrock
307-437 Midwest
307-438 Lander 6/19/2007
307-439 Casper
307-440 Basin
307-441 Casper
307-443 Cheyenne 6/18/2019
307-444 Evanston
307-445 Kemmerer 2/5/2021
307-447 Saratoga 10/8/2015
307-448 Rock Springs 5/12/2011
307-450 Dubois
307-455 Dubois
307-456 Big Piney 7/22/2019
307-457 Gas Hills
307-458 Casper 12/10/2021
307-459 Cheyenne 6/11/2002
307-460 Laramie 6/11/2002
307-461 Sheridan 6/11/2002
307-462 Casper 6/11/2002
307-463 Riverton 6/11/2002
307-464 Wright
307-465 Newcastle
307-466 Green River
307-467 Hulett
307-468 Upton
307-469 Hyattville
307-472 Casper
307-473 Casper
307-475 Cheyenne 12/21/2016
307-477 Cheyenne
307-480 Thermopolis 6/15/2005
307-481 Lusk 3/14/2007
307-486 Crowheart
307-487 Gillette 10/9/2018
307-488 Lander 4/19/2018
307-489 Shirley Basin 5/30/2018
307-497 Evanston
307-500 Border 2/5/2021
307-509 Cheyenne 9/5/2008
307-514 Cheyenne
307-520 Medicine Bow
307-522 Rock Springs 8/7/2017
307-527 Cody
307-529 Cheyenne 8/25/2009
307-532 Torrington
307-533 Sheridan
307-534 Torrington
307-537 Pinedale
307-540 Jeffrey City
307-541 Moran
307-543 Moran
307-544 Jeffrey City
307-545 Oldfathful
307-547 Burns
307-548 Lovell
307-549 Oldfathful
307-554 Glenrock
307-556 Riverton 2/5/2021
307-567 Gillette
307-568 Basin
307-575 Torrington 6/28/2002
307-576 Leigh Canyon
307-577 Casper
307-578 Cody
307-586 Cody 4/1/2005
307-587 Cody
307-600 Cokeville
307-620 Buffalo
307-621 Buffalo
307-622 Gillette 11/24/2010
307-624 Douglas 10/3/2001
307-629 Newcastle 12/21/2004
307-630 Cheyenne
307-631 Cheyenne
307-632 Cheyenne
307-633 Cheyenne
307-634 Cheyenne
307-635 Cheyenne
307-637 Cheyenne
307-638 Cheyenne
307-640 Cheyenne
307-643 West Spearfish
307-645 Clark
307-649 Carpenter
307-650 Cheyenne
307-654 Alpine
307-655 Sheridan
307-656 Alpine 3/22/2007
307-660 Gillette
307-663 West Edgemont
307-664 Frannie
307-666 Cheyenne 5/23/2019
307-667 Rawlins 2/28/2021
307-670 Gillette
307-672 Sheridan
307-673 Sheridan
307-674 Sheridan
307-675 Sheridan 1/30/2003
307-677 Evanston
307-679 Evanston
307-680 Gillette
307-681 Gillette 4/16/2010
307-682 Gillette
307-683 Sheridan
307-684 Buffalo
307-685 Gillette
307-686 Gillette
307-687 Gillette
307-688 Gillette 5/24/2004
307-689 Gillette
307-690 Jackson
307-696 Gillette 9/22/2008
307-699 Jackson
307-701 Cheyenne 12/27/2002
307-702 Casper 12/27/2002
307-703 Laramie 12/27/2002
307-704 Gillette 12/27/2002
307-705 Rock Springs 6/16/2003
307-706 Sheridan 12/27/2002
307-707 Green River 6/26/2003
307-708 Evanston 6/16/2003
307-709 Riverton 6/16/2003
307-710 Rawlins 6/16/2003
307-712 Cody 12/27/2002
307-713 Jackson 6/16/2003
307-714 Lander 6/16/2003
307-715 Torrington 12/27/2002
307-716 Powell 12/27/2002
307-717 Douglas 12/27/2002
307-718 Worland 12/27/2002
307-719 Buffalo 12/27/2002
307-720 Wheatland 12/27/2002
307-721 Laramie
307-722 Thermopolis 12/27/2002
307-723 Kemmerer 6/16/2003
307-724 Casper 6/16/2003
307-727 Kemmerer
307-728 Shoshoni
307-730 Jackson
307-731 Lovell 12/27/2002
307-732 Jackson
307-733 Jackson
307-734 Jackson
307-735 Glendo
307-736 Arvada
307-737 Southeast Sheridan
307-738 Kaycee
307-739 Jackson
307-740 Jackson
307-741 Glenrock 12/27/2002
307-742 Laramie
307-744 Newcastle 12/27/2002
307-745 Laramie
307-746 Newcastle
307-747 Mt View 6/16/2003
307-749 Pinedale 10/20/2003
307-750 Decker
307-751 Sheridan
307-752 Sheridan
307-754 Powell
307-755 Laramie
307-756 Moorcroft
307-757 Cheyenne
307-758 Clearmont
307-759 Lusk 10/20/2003
307-760 Laramie
307-761 Laramie
307-762 Burlington
307-763 Sheridan
307-764 Powell 4/1/2005
307-765 Greybull
307-766 Laramie
307-770 Farson 5/7/2020
307-771 Cheyenne
307-772 Cheyenne
307-773 Cheyenne
307-774 Jackson 6/22/2005
307-775 Cheyenne
307-776 Casper 3/9/2018
307-777 Cheyenne
307-778 Cheyenne
307-779 Wheatland 10/20/2003
307-780 Mt View
307-782 Mt View
307-783 Evanston
307-785 West Bell Fourche 4/19/2017
307-786 Urie
307-787 Lyman
307-788 West Lyman
307-789 Evanston
307-790 Sundance 12/18/2003
307-797 Casper 10/3/2001
307-798 Rock River 11/6/2007
307-799 Evanston
307-800 Kemmerer 11/19/2012
307-823 Cheyenne 8/1/2012
307-828 Kemmerer
307-829 Cheyenne 11/21/2014
307-834 La Grange
307-836 Guernsey
307-837 Lingle
307-840 Riverton
307-849 Border
307-850 Riverton
307-851 Riverton
307-854 Riverton 12/10/2007
307-855 Riverton
307-856 Riverton
307-857 Riverton
307-858 Riverton
307-859 Daniel
307-864 Thermopolis
307-867 Hamilton Dome
307-868 Meeteetse
307-870 Green River
307-871 Green River
307-872 Green River
307-874 Manila
307-875 Green River
307-876 Shoshoni
307-877 Kemmerer
307-878 South Alzada
307-880 Freedom 6/22/2005
307-881 Wheatland 11/21/2014
307-883 Freedom
307-884 Afton
307-885 Afton
307-886 Afton
307-887 Afton 6/22/2005
307-888 Oldfathful 2/22/2017
307-890 Freedom
307-895 Cheyenne 3/31/2022
307-896 West Bell Fourche
307-899 Cody
307-900 Glendo 6/10/2020
307-910 Cheyenne 4/23/2021
307-920 Cheyenne
307-921 Thermopolis
307-922 Rock Springs
307-939 Wright
307-941 Newcastle
307-949 Newcastle
307-977 Laramie
307-995 Casper
307-996 Cheyenne
307-999 Moran 2/28/2017
  1. The NPA is the Numbering Plan Area (area code) and NXX is the central office code.
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. The assignment date. If no date is shown the exchange code was assigned before 2001.

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List of cities in area code 307

City4 County Time5
Afton Lincoln M
Aladdin Crook M
Albin Laramie M
Alcova Natrona M
Alpine Lincoln M
Alva Crook M
Arapahoe Fremont M
Arminto Natrona M
Arvada Sheridan M
Auburn Lincoln M
Baggs Carbon M
Bairoil Sweetwater M
Banner Sheridan M
Basin Big Horn M
Bedford Lincoln M
Beulah Crook M
Big Horn Sheridan M
Big Piney Sublette M
Bondurant Sublette M
Bosler Albany M
Boulder Sublette M
Buffalo Johnson M
Buford Albany M
Burlington Big Horn M
Burns Laramie M
Byron Big Horn M
Carpenter Laramie M
Casper Natrona M
Centennial Albany M
Cheyenne Laramie M
Chugwater Platte M
Clearmont Sheridan M
Cody Park M
Cokeville Lincoln M
Cora Sublette M
Cowley Big Horn M
Crowheart Fremont M
Daniel Sublette M
Dayton Sheridan M
Deaver Big Horn M
Devils Tower Crook M
Diamondville Lincoln M
Dixon Carbon M
Douglas Converse M
Dubois Fremont M
Edgerton Natrona M
Elk Mountain Carbon M
Emblem Big Horn M
Encampment Carbon M
Etna Lincoln M
Evanston Uinta M
Evansville Natrona M
Fairview Lincoln M
Farson Sweetwater M
Fe Warren Afb Laramie M
Fort Bridger Uinta M
Fort Laramie Goshen M
Fort Washakie Fremont M
Four Corners Weston M
Frannie Park M
Freedom Lincoln M
Frontier Lincoln M
Garrett Albany M
Gillette Campbell M
Glendo Platte M
Glenrock Converse M
Granger Sweetwater M
Granite Canon Laramie M
Green River Sweetwater M
Greybull Big Horn M
Grover Lincoln M
Guernsey Platte M
Hanna Carbon M
Hartville Platte M
Hawk Springs Goshen M
Hiland Natrona M
Hillsdale Laramie M
Horse Creek Laramie M
Hudson Fremont M
Hulett Crook M
Huntley Goshen M
Hyattville Big Horn M
Jackson Teton M
Jay Em Goshen M
Jeffrey City Fremont M
Jelm Albany M
Kaycee Johnson M
Kelly Teton M
Kemmerer Lincoln M
Kinnear Fremont M
Kirby Hot Springs M
La Barge Lincoln M
Lagrange Goshen M
Lance Creek Niobrara M
Lander Fremont M
Laramie Albany M
Leiter Sheridan M
Linch Johnson M
Lingle Goshen M
Little America Sweetwater M
Lonetree Uinta M
Lost Springs Converse M
Lovell Big Horn M
Lusk Niobrara M
Lyman Uinta M
Lysite Fremont M
Manderson Big Horn M
Manville Niobrara M
Mc Kinnon Sweetwater M
Medicine Bow Carbon M
Meeteetse Park M
Meriden Laramie M
Midwest Natrona M
Mills Natrona M
Moorcroft Crook M
Moose Teton M
Moran Teton M
Mountain View Uinta M
Natrona Natrona M
Newcastle Weston M
Opal Lincoln M
Osage Weston M
Otto Big Horn M
Parkman Sheridan M
Pavillion Fremont M
Pine Bluffs Laramie M
Pinedale Sublette M
Point Of Rocks Sweetwater M
Powder River Natrona M
Powell Park M
Ralston Park M
Ranchester Sheridan M
Rawlins Carbon M
Recluse Campbell M
Reliance Sweetwater M
Riverton Fremont M
Robertson Uinta M
Rock River Albany M
Rock Springs Sweetwater M
Rozet Campbell M
Saddlestring Johnson M
Saratoga Carbon M
Savery Carbon M
Shawnee Converse M
Shell Big Horn M
Sheridan Sheridan M
Shirley Basin Carbon M
Shoshoni Fremont M
Sinclair Carbon M
Smoot Lincoln M
St Stephens Fremont M
Story Sheridan M
Sundance Crook M
Superior Sweetwater M
Ten Sleep Washakie M
Teton Village Teton M
Thayne Lincoln M
Thermopolis Hot Springs M
Tie Siding Albany M
Torrington Goshen M
Upton Weston M
Van Tassell Niobrara M
Veteran Goshen M
Walcott Carbon M
Wamsutter Sweetwater M
Wapiti Park M
Weston Campbell M
Wheatland Platte M
Wilson Teton M
Wolf Sheridan M
Worland Washakie M
Wright Campbell M
Wyarno Sheridan M
Yellowstone National Park Park M
Yoder Goshen M
  1. Listed in the table above are most, often not all places served by area code 307. When two or more places with the same name are located in the same state we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. M stands for Mountain Time (currently 05:27:11 AM).

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