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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 01 January 1947.

08:13:40 AM is the current time in area code 307 (Mountain Time).

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Map of area code 307

NPANXX1 Area served2 Date3
307-200Jackson8/16/2002
307-201Jackson1/7/2003
307-202Powell1/21/2003
307-203Jackson3/14/2001
307-204Cody2/6/2018
307-205Lingle11/16/2016
307-206Lander12/5/2013
307-207Lake12/6/2018
307-209Rock Springs12/19/2014
307-210Southeast Sheridan4/3/2020
307-212Rock Springs7/16/2002
307-213Cody7/16/2002
307-214Cheyenne1/6/2003
307-215Casper7/26/2001
307-216Lusk10/9/2002
307-217Buffalo10/9/2002
307-218Sheridan8/13/2019
307-219Powell3/26/2015
307-220Cheyenne
307-221Cheyenne
307-222Cheyenne
307-223Laramie
307-224Casper
307-225Laramie9/2/2020
307-226Afton12/28/2015
307-227Mammoth9/19/2016
307-228Gillette5/23/2014
307-229Cokeville2/17/2015
307-231Pinedale
307-232Casper
307-233Casper
307-234Casper
307-235Casper
307-236Burns4/3/2020
307-237Casper
307-238Hamilton Dome8/22/2017
307-239Dubois11/5/2015
307-240Riverton
307-241Wheatland
307-242Lake
307-243Casper
307-244Freedom5/15/2019
307-245Pinebluffs
307-246Albin
307-247Casper
307-248Afton3/25/2003
307-249Jackson3/24/2017
307-250Cody
307-251Casper4/13/2006
307-252Rock Springs
307-253Casper3/10/2008
307-254Powell9/11/2003
307-255Evanston7/15/2002
307-256Cheyenne1/5/2004
307-257Gillette5/19/2004
307-258Casper
307-259Casper
307-260Big Piney
307-261Casper
307-262Casper
307-263Cheyenne10/16/2019
307-264Jackson3/24/2014
307-265Casper
307-266Casper
307-267Casper
307-268Casper
307-269Wheatland
307-270Cokeville
307-271Powell5/26/2004
307-272Cody
307-273Farson
307-274Cheyenne7/14/2004
307-275Cheyenne1/12/2005
307-276Big Piney
307-277Casper8/21/2003
307-278Buffalo5/19/2004
307-279Cokeville
307-280Farson
307-281Sundance
307-282Sundance
307-283Sundance
307-284Jackson11/20/2019
307-285Buffalo5/21/2020
307-286Cheyenne1/19/2004
307-287Cheyenne5/23/2006
307-288Evanston5/19/2004
307-290Sundance
307-291Cody10/28/2021
307-292Cheyenne6/17/2020
307-293Guernsey3/2/2021
307-296Cody
307-297Green River
307-298Douglas5/19/2004
307-299Gillette10/21/2003
307-300Powell10/10/2019
307-302Cody8/17/2020
307-303Green River11/9/2020
307-304Jeffrey City9/17/2020
307-305Midwest3/5/2021
307-306Douglas12/21/2020
307-309Glenrock9/8/2006
307-310Cheyenne10/23/2019
307-312West Spearfish6/19/2012
307-313Evanston
307-314Laramie
307-315Casper5/11/2007
307-316Cheyenne3/20/2006
307-317Cheyenne5/22/2017
307-318Wright1/15/2021
307-319Shoshoni9/17/2020
307-320Rawlins
307-321Rawlins
307-322Wheatland
307-323Pinedale7/22/2019
307-324Rawlins
307-325Hanna
307-326Saratoga
307-327Encampment
307-328Rawlins
307-329Saratoga
307-330Lander
307-331Wheatland
307-332Lander
307-333Casper
307-334Lusk
307-335Lander
307-336Daniel7/22/2019
307-337Casper1/7/2011
307-338Torrington1/12/2011
307-339Hanna
307-340Lusk
307-341South Wyola
307-342Jackson
307-343Laramie7/16/2009
307-344Mammoth
307-345Lander
307-346Cheyenne7/14/2021
307-347Worland
307-348Hanna
307-349Lander
307-350Rock Springs
307-351Douglas
307-352Rock Springs
307-353Alta
307-354Rock Springs3/27/2001
307-355La Grange7/29/2020
307-356Shirley Basin
307-358Douglas
307-359Douglas
307-360Pinedale
307-361Baggs3/5/2021
307-362Rock Springs
307-363Gillette8/30/2010
307-364Green River5/23/2014
307-365Cheyenne3/3/2008
307-366Ten Sleep
307-367Pinedale
307-368Afton2/10/2021
307-369Cheyenne1/10/2011
307-370Rawlins
307-371Rock Springs
307-372Douglas8/10/2020
307-373Greybull
307-374Rock Springs9/9/2021
307-375Worland
307-376Alpine8/11/2021
307-377Casper
307-378Rock River
307-379Medicine Bow
307-380Baggs
307-381Sheridan4/23/2021
307-382Rock Springs
307-383Baggs
307-384Afton11/3/2021
307-386Labarge
307-387Gillette10/1/2021
307-388Worland
307-389Rock Springs
307-390Labarge
307-391Moorcroft3/14/2005
307-392Border6/21/2006
307-393Evanston3/31/2021
307-394Casper5/21/2021
307-395Laramie8/11/2021
307-396Green River10/20/2021
307-397Hanna11/5/2021
307-398Labarge11/5/2021
307-399Laramie5/16/2002
307-400Cheyenne1/24/2020
307-401Torrington
307-402Mt View11/5/2021
307-403Moran 2/22/2022
307-404Medicine Bow5/23/2018
307-407West Spearfish8/10/2020
307-408Lyman11/5/2021
307-409La Grange2/20/2018
307-410Powell 3/22/2022
307-413Jackson1/29/2001
307-414Cheyenne8/24/2015
307-417Rawlins
307-419Cody 3/24/2022
307-421Cheyenne
307-422Chugwater
307-423Buffalo11/5/2021
307-425Buffalo3/30/2011
307-426Cheyenne5/22/2007
307-429Sheridan5/23/2013
307-431Worland
307-432Cheyenne
307-433Cheyenne
307-436Glenrock
307-437Midwest
307-438Lander6/19/2007
307-439Casper
307-440Basin
307-441Casper
307-443Cheyenne6/18/2019
307-444Evanston
307-445Kemmerer2/5/2021
307-447Saratoga10/8/2015
307-448Rock Springs5/12/2011
307-450Dubois
307-455Dubois
307-456Big Piney7/22/2019
307-457Gas Hills
307-458Casper 12/10/2021
307-459Cheyenne6/11/2002
307-460Laramie6/11/2002
307-461Sheridan6/11/2002
307-462Casper6/11/2002
307-463Riverton6/11/2002
307-464Wright
307-465Newcastle
307-466Green River
307-467Hulett
307-468Upton
307-469Hyattville
307-472Casper
307-473Casper
307-475Cheyenne12/21/2016
307-477Cheyenne
307-480Thermopolis6/15/2005
307-481Lusk3/14/2007
307-486Crowheart
307-487Gillette10/9/2018
307-488Lander4/19/2018
307-489Shirley Basin5/30/2018
307-497Evanston
307-500Border2/5/2021
307-509Cheyenne9/5/2008
307-514Cheyenne
307-520Medicine Bow
307-522Rock Springs8/7/2017
307-527Cody
307-529Cheyenne8/25/2009
307-532Torrington
307-533Sheridan
307-534Torrington
307-537Pinedale
307-540Jeffrey City
307-541Moran
307-543Moran
307-544Jeffrey City
307-545Oldfathful
307-547Burns
307-548Lovell
307-549Oldfathful
307-554Glenrock
307-556Riverton2/5/2021
307-567Gillette
307-568Basin
307-575Torrington6/28/2002
307-576Leigh Canyon
307-577Casper
307-578Cody
307-586Cody4/1/2005
307-587Cody
307-600Cokeville
307-620Buffalo
307-621Buffalo
307-622Gillette11/24/2010
307-624Douglas10/3/2001
307-629Newcastle12/21/2004
307-630Cheyenne
307-631Cheyenne
307-632Cheyenne
307-633Cheyenne
307-634Cheyenne
307-635Cheyenne
307-637Cheyenne
307-638Cheyenne
307-640Cheyenne
307-643West Spearfish
307-645Clark
307-649Carpenter
307-650Cheyenne
307-654Alpine
307-655Sheridan
307-656Alpine3/22/2007
307-660Gillette
307-663West Edgemont
307-664Frannie
307-666Cheyenne5/23/2019
307-667Rawlins2/28/2021
307-670Gillette
307-672Sheridan
307-673Sheridan
307-674Sheridan
307-675Sheridan1/30/2003
307-677Evanston
307-679Evanston
307-680Gillette
307-681Gillette4/16/2010
307-682Gillette
307-683Sheridan
307-684Buffalo
307-685Gillette
307-686Gillette
307-687Gillette
307-688Gillette5/24/2004
307-689Gillette
307-690Jackson
307-696Gillette9/22/2008
307-699Jackson
307-701Cheyenne12/27/2002
307-702Casper12/27/2002
307-703Laramie12/27/2002
307-704Gillette12/27/2002
307-705Rock Springs6/16/2003
307-706Sheridan12/27/2002
307-707Green River6/26/2003
307-708Evanston6/16/2003
307-709Riverton6/16/2003
307-710Rawlins6/16/2003
307-712Cody12/27/2002
307-713Jackson6/16/2003
307-714Lander6/16/2003
307-715Torrington12/27/2002
307-716Powell12/27/2002
307-717Douglas12/27/2002
307-718Worland12/27/2002
307-719Buffalo12/27/2002
307-720Wheatland12/27/2002
307-721Laramie
307-722Thermopolis12/27/2002
307-723Kemmerer6/16/2003
307-724Casper6/16/2003
307-727Kemmerer
307-728Shoshoni
307-730Jackson
307-731Lovell12/27/2002
307-732Jackson
307-733Jackson
307-734Jackson
307-735Glendo
307-736Arvada
307-737Southeast Sheridan
307-738Kaycee
307-739Jackson
307-740Jackson
307-741Glenrock12/27/2002
307-742Laramie
307-744Newcastle12/27/2002
307-745Laramie
307-746Newcastle
307-747Mt View6/16/2003
307-749Pinedale10/20/2003
307-750Decker
307-751Sheridan
307-752Sheridan
307-754Powell
307-755Laramie
307-756Moorcroft
307-757Cheyenne
307-758Clearmont
307-759Lusk10/20/2003
307-760Laramie
307-761Laramie
307-762Burlington
307-763Sheridan
307-764Powell4/1/2005
307-765Greybull
307-766Laramie
307-770Farson5/7/2020
307-771Cheyenne
307-772Cheyenne
307-773Cheyenne
307-774Jackson6/22/2005
307-775Cheyenne
307-776Casper3/9/2018
307-777Cheyenne
307-778Cheyenne
307-779Wheatland10/20/2003
307-780Mt View
307-782Mt View
307-783Evanston
307-785West Bell Fourche4/19/2017
307-786Urie
307-787Lyman
307-788West Lyman
307-789Evanston
307-790Sundance12/18/2003
307-797Casper10/3/2001
307-798Rock River11/6/2007
307-799Evanston
307-800Kemmerer11/19/2012
307-823Cheyenne8/1/2012
307-828Kemmerer
307-829Cheyenne11/21/2014
307-834La Grange
307-836Guernsey
307-837Lingle
307-840Riverton
307-849Border
307-850Riverton
307-851Riverton
307-854Riverton12/10/2007
307-855Riverton
307-856Riverton
307-857Riverton
307-858Riverton
307-859Daniel
307-864Thermopolis
307-867Hamilton Dome
307-868Meeteetse
307-870Green River
307-871Green River
307-872Green River
307-874Manila
307-875Green River
307-876Shoshoni
307-877Kemmerer
307-878South Alzada
307-880Freedom6/22/2005
307-881Wheatland11/21/2014
307-883Freedom
307-884Afton
307-885Afton
307-886Afton
307-887Afton6/22/2005
307-888Oldfathful2/22/2017
307-890Freedom
307-895Cheyenne 3/31/2022
307-896West Bell Fourche
307-899Cody
307-900Glendo6/10/2020
307-910Cheyenne4/23/2021
307-920Cheyenne
307-921Thermopolis
307-922Rock Springs
307-939Wright
307-941Newcastle
307-949Newcastle
307-977Laramie
307-995Casper
307-996Cheyenne
307-999Moran2/28/2017
  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
AftonLincoln M
AladdinCrook M
AlbinLaramie M
AlcovaNatrona M
AlpineLincoln M
AlvaCrook M
ArapahoeFremont M
ArmintoNatrona M
ArvadaSheridan M
AuburnLincoln M
BaggsCarbon M
BairoilSweetwater M
BannerSheridan M
BasinBig Horn M
BedfordLincoln M
BeulahCrook M
Big HornSheridan M
Big PineySublette M
BondurantSublette M
BoslerAlbany M
BoulderSublette M
BuffaloJohnson M
BufordAlbany M
BurlingtonBig Horn M
BurnsLaramie M
ByronBig Horn M
CarpenterLaramie M
CasperNatrona M
CentennialAlbany M
CheyenneLaramie M
ChugwaterPlatte M
ClearmontSheridan M
CodyPark M
CokevilleLincoln M
CoraSublette M
CowleyBig Horn M
CrowheartFremont M
DanielSublette M
DaytonSheridan M
DeaverBig Horn M
Devils TowerCrook M
DiamondvilleLincoln M
DixonCarbon M
DouglasConverse M
DuboisFremont M
EdgertonNatrona M
Elk MountainCarbon M
EmblemBig Horn M
EncampmentCarbon M
EtnaLincoln M
EvanstonUinta M
EvansvilleNatrona M
FairviewLincoln M
FarsonSweetwater M
Fe Warren AfbLaramie M
Fort BridgerUinta M
Fort LaramieGoshen M
Fort WashakieFremont M
Four CornersWeston M
FranniePark M
FreedomLincoln M
FrontierLincoln M
GarrettAlbany M
GilletteCampbell M
GlendoPlatte M
GlenrockConverse M
GrangerSweetwater M
Granite CanonLaramie M
Green RiverSweetwater M
GreybullBig Horn M
GroverLincoln M
GuernseyPlatte M
HannaCarbon M
HartvillePlatte M
Hawk SpringsGoshen M
HilandNatrona M
HillsdaleLaramie M
Horse CreekLaramie M
HudsonFremont M
HulettCrook M
HuntleyGoshen M
HyattvilleBig Horn M
JacksonTeton M
Jay EmGoshen M
Jeffrey CityFremont M
JelmAlbany M
KayceeJohnson M
KellyTeton M
KemmererLincoln M
KinnearFremont M
KirbyHot Springs M
La BargeLincoln M
LagrangeGoshen M
Lance CreekNiobrara M
LanderFremont M
LaramieAlbany M
LeiterSheridan M
LinchJohnson M
LingleGoshen M
Little AmericaSweetwater M
LonetreeUinta M
Lost SpringsConverse M
LovellBig Horn M
LuskNiobrara M
LymanUinta M
LysiteFremont M
MandersonBig Horn M
ManvilleNiobrara M
Mc KinnonSweetwater M
Medicine BowCarbon M
MeeteetsePark M
MeridenLaramie M
MidwestNatrona M
MillsNatrona M
MoorcroftCrook M
MooseTeton M
MoranTeton M
Mountain ViewUinta M
NatronaNatrona M
NewcastleWeston M
OpalLincoln M
OsageWeston M
OttoBig Horn M
ParkmanSheridan M
PavillionFremont M
Pine BluffsLaramie M
PinedaleSublette M
Point Of RocksSweetwater M
Powder RiverNatrona M
PowellPark M
RalstonPark M
RanchesterSheridan M
RawlinsCarbon M
RecluseCampbell M
RelianceSweetwater M
RivertonFremont M
RobertsonUinta M
Rock RiverAlbany M
Rock SpringsSweetwater M
RozetCampbell M
SaddlestringJohnson M
SaratogaCarbon M
SaveryCarbon M
ShawneeConverse M
ShellBig Horn M
SheridanSheridan M
Shirley BasinCarbon M
ShoshoniFremont M
SinclairCarbon M
SmootLincoln M
St StephensFremont M
StorySheridan M
SundanceCrook M
SuperiorSweetwater M
Ten SleepWashakie M
Teton VillageTeton M
ThayneLincoln M
ThermopolisHot Springs M
Tie SidingAlbany M
TorringtonGoshen M
UptonWeston M
Van TassellNiobrara M
VeteranGoshen M
WalcottCarbon M
WamsutterSweetwater M
WapitiPark M
WestonCampbell M
WheatlandPlatte M
WilsonTeton M
WolfSheridan M
WorlandWashakie M
WrightCampbell M
WyarnoSheridan M
Yellowstone National ParkPark M
YoderGoshen 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 08:13:40 AM).

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