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307 Area Code

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

In service date for area code 307: January 01, 1947.

The current time for places served by area code 307 is 04:19:16 PM (Mountain Time Zone).

Reverse phone lookup

Map of area code 307

307 phone number location

NPANXX	Area served¹	Date²
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	N/A
307-221	Cheyenne	N/A
307-222	Cheyenne	N/A
307-223	Laramie	N/A
307-224	Casper	N/A
307-225	Laramie	9/2020
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	N/A
307-232	Casper	N/A
307-233	Casper	N/A
307-234	Casper	N/A
307-235	Casper	N/A
307-236	Burns	4/3/2020
307-237	Casper	N/A
307-238	Hamilton Dome	8/22/2017
307-239	Dubois	11/5/2015
307-240	Riverton	N/A
307-241	Wheatland	N/A
307-242	Lake	N/A
307-243	Casper	N/A
307-244	Freedom	5/15/2019
307-245	Pinebluffs	N/A
307-246	Albin	N/A
307-247	Casper	N/A
307-248	Afton	3/25/2003
307-249	Jackson	3/24/2017
307-250	Cody	N/A
307-251	Casper	4/13/2006
307-252	Rock Springs	N/A
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	N/A
307-259	Casper	N/A
307-260	Big Piney	N/A
307-261	Casper	N/A
307-262	Casper	N/A
307-263	Cheyenne	10/16/2019
307-264	Jackson	3/24/2014
307-265	Casper	N/A
307-266	Casper	N/A
307-267	Casper	N/A
307-268	Casper	N/A
307-269	Wheatland	N/A
307-270	Cokeville	N/A
307-271	Powell	5/26/2004
307-272	Cody	N/A
307-273	Farson	N/A
307-274	Cheyenne	7/14/2004
307-275	Cheyenne	1/12/2005
307-276	Big Piney	N/A
307-277	Casper	8/21/2003
307-278	Buffalo	5/19/2004
307-279	Cokeville	N/A
307-280	Farson	N/A
307-281	Sundance	N/A
307-282	Sundance	N/A
307-283	Sundance	N/A
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
307-289	Cheyenne	04/14/2023
307-290	Sundance	N/A
307-291	Cody	10/28/2021
307-292	Cheyenne	6/17/2020
307-293	Guernsey	3/2021
307-296	Cody	N/A
307-297	Green River	N/A
307-298	Douglas	5/19/2004
307-299	Gillette	10/21/2003

NPANXX	Area served¹	Date²
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	N/A
307-314	Laramie	N/A
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	N/A
307-321	Rawlins	N/A
307-322	Wheatland	N/A
307-323	Pinedale	7/22/2019
307-324	Rawlins	N/A
307-325	Hanna	N/A
307-326	Saratoga	N/A
307-327	Encampment	N/A
307-328	Rawlins	N/A
307-329	Saratoga	N/A
307-330	Lander	N/A
307-331	Wheatland	N/A
307-332	Lander	N/A
307-333	Casper	N/A
307-334	Lusk	N/A
307-335	Lander	N/A
307-336	Daniel	7/22/2019
307-337	Casper	1/7/2011
307-338	Torrington	1/12/2011
307-339	Hanna	N/A
307-340	Lusk	N/A
307-341	South Wyola	N/A
307-342	Jackson	N/A
307-343	Laramie	7/16/2009
307-344	Mammoth	N/A
307-345	Lander	N/A
307-346	Cheyenne	7/14/2021
307-347	Worland	N/A
307-348	Hanna	N/A
307-349	Lander	N/A
307-350	Rock Springs	N/A
307-351	Douglas	N/A
307-352	Rock Springs	N/A
307-353	Alta	N/A
307-354	Rock Springs	3/27/2001
307-355	La Grange	7/29/2020
307-356	Shirley Basin	N/A
307-358	Douglas	N/A
307-359	Douglas	N/A
307-360	Pinedale	N/A
307-361	Baggs	3/5/2021
307-362	Rock Springs	N/A
307-363	Gillette	8/30/2010
307-364	Green River	5/23/2014
307-365	Cheyenne	3/3/2008
307-366	Ten Sleep	N/A
307-367	Pinedale	N/A
307-368	Afton	2/10/2021
307-369	Cheyenne	1/10/2011
307-370	Rawlins	N/A
307-371	Rock Springs	N/A
307-372	Douglas	8/10/2020
307-373	Greybull	N/A
307-374	Rock Springs	9/9/2021
307-375	Worland	N/A
307-376	Alpine	8/11/2021
307-377	Casper	N/A
307-378	Rock River	N/A
307-379	Medicine Bow	N/A
307-380	Baggs	N/A
307-381	Sheridan	4/23/2021
307-382	Rock Springs	N/A
307-383	Baggs	N/A
307-384	Afton	11/3/2021
307-386	Labarge	N/A
307-387	Gillette	10/2021
307-388	Worland	N/A
307-389	Rock Springs	N/A
307-390	Labarge	N/A
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

NPANXX	Area served¹	Date²
307-400	Cheyenne	1/24/2020
307-401	Torrington	N/A
307-402	Mt View	11/5/2021
307-403	Moran	2/22/2022
307-404	Medicine Bow	5/23/2018
307-405	West Bell Fourche	05/24/2023
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
307-412	Laramie	9/23/2022
307-413	Jackson	1/29/2001
307-414	Cheyenne	8/24/2015
307-415	Cheyenne	03/03/2023
307-416	Pinedale	05/24/2023
307-417	Rawlins	N/A
307-419	Cody	3/24/2022
307-420	Lingle	05/24/2023
307-421	Cheyenne	N/A
307-422	Chugwater	N/A
307-423	Buffalo	11/5/2021
307-424	Lake	05/24/2023
307-425	Buffalo	3/30/2011
307-426	Cheyenne	5/22/2007
307-427	Mammoth	05/24/2023
307-429	Sheridan	5/23/2013
307-431	Worland	N/A
307-432	Cheyenne	N/A
307-433	Cheyenne	N/A
307-436	Glenrock	N/A
307-437	Midwest	N/A
307-438	Lander	6/19/2007
307-439	Casper	N/A
307-440	Basin	N/A
307-441	Casper	N/A
307-443	Cheyenne	6/18/2019
307-444	Evanston	N/A
307-445	Kemmerer	2/5/2021
307-446	West Spearfish	05/24/2023
307-447	Saratoga	10/8/2015
307-448	Rock Springs	5/12/2011
307-450	Dubois	N/A
307-455	Dubois	N/A
307-456	Big Piney	7/22/2019
307-457	Gas Hills	N/A
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	N/A
307-465	Newcastle	N/A
307-466	Green River	N/A
307-467	Hulett	N/A
307-468	Upton	N/A
307-469	Hyattville	N/A
307-472	Casper	N/A
307-473	Casper	N/A
307-475	Cheyenne	12/21/2016
307-477	Cheyenne	N/A
307-480	Thermopolis	6/15/2005
307-481	Lusk	3/14/2007
307-486	Crowheart	N/A
307-487	Gillette	10/9/2018
307-488	Lander	4/19/2018
307-489	Shirley Basin	5/30/2018
307-497	Evanston	N/A

NPANXX	Area served¹	Date²
307-500	Border	2/5/2021
307-509	Cheyenne	9/5/2008
307-514	Cheyenne	N/A
307-520	Medicine Bow	N/A
307-522	Rock Springs	8/7/2017
307-527	Cody	N/A
307-529	Cheyenne	8/25/2009
307-532	Torrington	N/A
307-533	Sheridan	N/A
307-534	Torrington	N/A
307-537	Pinedale	N/A
307-540	Jeffrey City	N/A
307-541	Moran	N/A
307-543	Moran	N/A
307-544	Jeffrey City	N/A
307-545	Oldfathful	N/A
307-547	Burns	N/A
307-548	Lovell	N/A
307-549	Oldfathful	N/A
307-554	Glenrock	N/A
307-556	Riverton	2/5/2021
307-567	Gillette	N/A
307-568	Basin	N/A
307-575	Torrington	6/28/2002
307-576	Leigh Canyon	N/A
307-577	Casper	N/A
307-578	Cody	N/A
307-586	Cody	4/2005
307-587	Cody	N/A

NPANXX	Area served¹	Date²
307-600	Cokeville	N/A
307-620	Buffalo	N/A
307-621	Buffalo	N/A
307-622	Gillette	11/24/2010
307-624	Douglas	10/3/2001
307-629	Newcastle	12/21/2004
307-630	Cheyenne	N/A
307-631	Cheyenne	N/A
307-632	Cheyenne	N/A
307-633	Cheyenne	N/A
307-634	Cheyenne	N/A
307-635	Cheyenne	N/A
307-637	Cheyenne	N/A
307-638	Cheyenne	N/A
307-640	Cheyenne	N/A
307-643	West Spearfish	N/A
307-645	Clark	N/A
307-649	Carpenter	N/A
307-650	Cheyenne	N/A
307-654	Alpine	N/A
307-655	Sheridan	N/A
307-656	Alpine	3/22/2007
307-660	Gillette	N/A
307-663	West Edgemont	N/A
307-664	Frannie	N/A
307-666	Cheyenne	5/23/2019
307-667	Rawlins	2/28/2021
307-670	Gillette	N/A
307-672	Sheridan	N/A
307-673	Sheridan	N/A
307-674	Sheridan	N/A
307-675	Sheridan	1/30/2003
307-677	Evanston	N/A
307-679	Evanston	N/A
307-680	Gillette	N/A
307-681	Gillette	4/16/2010
307-682	Gillette	N/A
307-683	Sheridan	N/A
307-684	Buffalo	N/A
307-685	Gillette	N/A
307-686	Gillette	N/A
307-687	Gillette	N/A
307-688	Gillette	5/24/2004
307-689	Gillette	N/A
307-690	Jackson	N/A
307-696	Gillette	9/22/2008
307-699	Jackson	N/A

NPANXX	Area served¹	Date²
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	N/A
307-722	Thermopolis	12/27/2002
307-723	Kemmerer	6/16/2003
307-724	Casper	6/16/2003
307-727	Kemmerer	N/A
307-728	Shoshoni	N/A
307-730	Jackson	N/A
307-731	Lovell	12/27/2002
307-732	Jackson	N/A
307-733	Jackson	N/A
307-734	Jackson	N/A
307-735	Glendo	N/A
307-736	Arvada	N/A
307-737	Southeast Sheridan	N/A
307-738	Kaycee	N/A
307-739	Jackson	N/A
307-740	Jackson	N/A
307-741	Glenrock	12/27/2002
307-742	Laramie	N/A
307-744	Newcastle	12/27/2002
307-745	Laramie	N/A
307-746	Newcastle	N/A
307-747	Mt View	6/16/2003
307-749	Pinedale	10/20/2003
307-750	Decker	N/A
307-751	Sheridan	N/A
307-752	Sheridan	N/A
307-754	Powell	N/A
307-755	Laramie	N/A
307-756	Moorcroft	N/A
307-757	Cheyenne	N/A
307-758	Clearmont	N/A
307-759	Lusk	10/20/2003
307-760	Laramie	N/A
307-761	Laramie	N/A
307-762	Burlington	N/A
307-763	Sheridan	N/A
307-764	Powell	4/2005
307-765	Greybull	N/A
307-766	Laramie	N/A
307-770	Farson	5/7/2020
307-771	Cheyenne	N/A
307-772	Cheyenne	N/A
307-773	Cheyenne	N/A
307-774	Jackson	6/22/2005
307-775	Cheyenne	N/A
307-776	Casper	3/9/2018
307-777	Cheyenne	N/A
307-778	Cheyenne	N/A
307-779	Wheatland	10/20/2003
307-780	Mt View	N/A
307-782	Mt View	N/A
307-783	Evanston	N/A
307-785	West Bell Fourche	4/19/2017
307-786	Urie	N/A
307-787	Lyman	N/A
307-788	West Lyman	N/A
307-789	Evanston	N/A
307-790	Sundance	12/18/2003
307-797	Casper	10/3/2001
307-798	Rock River	11/6/2007
307-799	Evanston	N/A

NPANXX	Area served¹	Date²
307-800	Kemmerer	11/19/2012
307-823	Cheyenne	8/2012
307-828	Kemmerer	N/A
307-829	Cheyenne	11/21/2014
307-834	La Grange	N/A
307-836	Guernsey	N/A
307-837	Lingle	N/A
307-840	Riverton	N/A
307-849	Border	N/A
307-850	Riverton	N/A
307-851	Riverton	N/A
307-854	Riverton	12/10/2007
307-855	Riverton	N/A
307-856	Riverton	N/A
307-857	Riverton	N/A
307-858	Riverton	N/A
307-859	Daniel	N/A
307-864	Thermopolis	N/A
307-867	Hamilton Dome	N/A
307-868	Meeteetse	N/A
307-870	Green River	N/A
307-871	Green River	N/A
307-872	Green River	N/A
307-874	Manila	N/A
307-875	Green River	N/A
307-876	Shoshoni	N/A
307-877	Kemmerer	N/A
307-878	South Alzada	N/A
307-880	Freedom	6/22/2005
307-881	Wheatland	11/21/2014
307-883	Freedom	N/A
307-884	Afton	N/A
307-885	Afton	N/A
307-886	Afton	N/A
307-887	Afton	6/22/2005
307-888	Oldfathful	2/22/2017
307-890	Freedom	N/A
307-895	Cheyenne	3/31/2022
307-896	West Bell Fourche	N/A
307-899	Cody	N/A

NPANXX	Area served¹	Date²
307-900	Glendo	6/10/2020
307-910	Cheyenne	4/23/2021
307-920	Cheyenne	N/A
307-921	Thermopolis	N/A
307-922	Rock Springs	N/A
307-939	Wright	N/A
307-941	Newcastle	N/A
307-949	Newcastle	N/A
307-977	Laramie	N/A
307-990	Lander	04/04/2023
307-995	Casper	N/A
307-996	Cheyenne	N/A
307-999	Moran	2/28/2017

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.
Assignment date. N/A - mostly CO codes assigned before 2001.

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Cities in area code 307

City¹	County	Time²
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

Listed above are most places served by area code 307. When multiple places in a state/province share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
M stands for Mountain Time Zone (currently 04:19:16 PM).

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307 Area Code

Reverse phone lookup

Map of area code 307

307 phone number location

307-2XX-XXXX

307-3XX-XXXX

307-4XX-XXXX

307-5XX-XXXX

307-6XX-XXXX

307-9XX-XXXX

Cities in area code 307