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307 Area Code 🌍☎️

Area Code Profile · Wyoming

The 307 area code is located in the state of Wyoming and covers 203 cities, serving a total population of approximately 437,432. Major cities covered by the 307 area code include Cheyenne, Casper, Laramie, Gillette, Rock Springs (which represents the most populated areas). There are a total of 479 telephone prefix exchanges in this area code, which support an estimated 4,790,000 active or assignable phone numbers. These prefix lines are operated by 49 distinct carriers, with Cheyenne as the primary rate center location.

Mountain Time203 Cities479 Prefixes

Reverse Phone Lookup in Cheyenne, Wyoming

Unmask unknown callers, verify telemarketing reports, and view detailed owner information for any phone number beginning with area code (307).

How it works

1

Enter Number

Provide any 10-digit phone number starting with the (307) area code.

2

Database Search

Our system scans public registries, carrier mappings, and spam reports.

3

Reveal Report

Access location details, line type, carrier, owner information, and safety levels.

Neighborhood Demographics

Calculated demographics and census summary estimations for area code 307.

32.4 y/oMedian Age
$111,900Median Income
$684,000Median Home Value
437,432Total Population

Telemarketer Complaints

Most recent complaints and comments for phone numbers beginning with 307.

Did you receive an unwanted call from a (307) phone number?

Help the community identify spammers by filing a comment.

(307) 654-6559May 16, 2026Scam / Fraud
Robocall claiming to be from the IRS. Stated that my Social Security Number has been flagged and suspended. Asked to press 1 to speak with an agent. Obvious phishing scam.
See Details
(307) 667-6576May 20, 2026Robocall
Received a silent call. When I answered, there was just dead air for 5 seconds before it automatically disconnected. Likely an automated system testing for active numbers.
See Details
(307) 680-6593May 19, 2026Telemarketer
Offered an unsolicited quote for local roofing and home energy services. They knew my area code but when I asked how they got my number, they hung up immediately.
See Details
(307) 693-6610May 18, 2026Debt Collector
Automated voice caller looking for someone named David. Keeps calling repeatedly asking to settle a debt. I have had this number for years and don't know David.
See Details

Cities in the 307 Area Code

The most populous cities in area code 307 are: Cheyenne (59,466), Casper (55,316), Laramie (30,816), Gillette (29,087), and Rock Springs (23,036).

Other cities in the 307 area code include:

Sheridan, Green River, Evanston, Riverton, Jackson, Cody, Rawlins, Lander, Torrington, Powell, Douglas, Ranchettes, Worland, Buffalo, South Greeley, Fox Farm-College, Wheatland, Newcastle, Mills, Warren AFB, Thermopolis, Kemmerer, Glenrock, Evansville, Lovell.

CityPopulation% in Area Code
Cheyenne59,466100%
Casper55,316100%
Laramie30,816100%
Gillette29,087100%
Rock Springs23,036100%
Sheridan17,444100%
Green River12,515100%
Evanston12,359100%
Riverton10,615100%
Jackson9,577100%
Cody9,520100%
Rawlins9,259100%
Lander7,487100%
Torrington6,501100%
Powell6,314100%
Douglas6,120100%
Ranchettes5,798100%
Worland5,487100%
Buffalo4,585100%
South Greeley4,217100%

Showing top 20 of 203 cities.

What Time Zone is Area Code 307?

Mountain Time Zone

Abbreviation: MT · UTC Offset: UTC-7

The 307 area code lies within the Mountain Time Zone (MT, UTC-7).

Phone Prefixes in the 307 Area Code

479 prefixes found · 49 carriers · 92 rate centers

PrefixCarrierRate Center
(307) 200LEVEL 3 COMMUNICATIONS, LLC - WYJACKSON
(307) 201LEVEL 3 COMMUNICATIONS, LLC - WYJACKSON
(307) 202NEW CINGULAR WIRELESS PCS, LLCPOWELL
(307) 203T-MOBILE USA, INC.JACKSON
(307) 204AIRUS, INC. - WYCODY
(307) 205LEVEL 3 COMMUNICATIONS, LLC - WYLINGLE
(307) 206MCIMETRO ACCESS TRANSMISSION SERVICES LLCLANDER
(307) 207AIRUS, INC. - WYLAKE
(307) 209CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYROCK SPG
(307) 210NEW CINGULAR WIRELESS PCS, LLCSOUTHESRDN
(307) 212LEVEL 3 COMMUNICATIONS, LLC - WYROCK SPG
(307) 213LEVEL 3 COMMUNICATIONS, LLC - WYCODY
(307) 214CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCHEYENNE
(307) 215AT&T - LOCALCASPER
(307) 216NEW CINGULAR WIRELESS PCS, LLCLUSK
(307) 217NEW CINGULAR WIRELESS PCS, LLCBUFFALO
(307) 218ONVOY, LLC - WYSHERIDAN
(307) 219CENTURYLINK COMMUNICATIONS, LLCPOWELL
(307) 220T-MOBILE USA, INC.CHEYENNE
(307) 221T-MOBILE USA, INC.CHEYENNE
(307) 222LEVEL 3 COMMUNICATIONS, LLC - WYCHEYENNE
(307) 223LEVEL 3 COMMUNICATIONS, LLC - WYLARAMIE
(307) 224LEVEL 3 COMMUNICATIONS, LLC - WYCASPER
(307) 225BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER]LARAMIE
(307) 226MCIMETRO ACCESS TRANSMISSION SERVICES LLCAFTON
(307) 227ONVOY, LLC - WYMAMMOTH
(307) 228BANDWIDTH.COM CLEC, LLC - WYGILLETTE
(307) 229GOLD STAR COMMUNICATIONS, LLCCOKEVILLE
(307) 230BANDWIDTH.COM CLEC, LLC - WYBORDER
(307) 231CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYPINEDALE
(307) 232QWEST CORPORATIONCASPER
(307) 233QWEST CORPORATIONCASPER
(307) 234QWEST CORPORATIONCASPER
(307) 235QWEST CORPORATIONCASPER
(307) 236NEW CINGULAR WIRELESS PCS, LLCBURNS
(307) 237QWEST CORPORATIONCASPER
(307) 238NEW CINGULAR WIRELESS PCS, LLCHAMITNDOME
(307) 239GOLD STAR COMMUNICATIONS, LLCDUBOIS
(307) 240CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYRIVERTON
(307) 241NEW CINGULAR WIRELESS PCS, LLCWHEATLAND
(307) 242QWEST CORPORATIONLAKE
(307) 243ONVOY, LLC - WYCASPER
(307) 244SILVER STAR TEL CO INCFREEDOM
(307) 245RT COMMUNICATIONSPINEBLUFFS
(307) 246RT COMMUNICATIONSALBIN
(307) 247NEW CINGULAR WIRELESS PCS, LLCCASPER
(307) 248CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYAFTON
(307) 249TELNYX LLCJACKSON
(307) 250CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCODY
(307) 251CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCASPER
(307) 252UINTAH BASIN ELECTRONIC TELECOMMUNICATIONSROCK SPG
(307) 253QWEST CORPORATIONCASPER
(307) 254CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYPOWELL
(307) 255UINTAH BASIN ELECTRONIC TELECOMMUNICATIONSEVANSTON
(307) 256METROPCS, INC.CHEYENNE
(307) 257LEVEL 3 COMMUNICATIONS, LLC - WYGILLETTE
(307) 258CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCASPER
(307) 259CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCASPER
(307) 260UNION TELEPHONE COMPANYBIG PINEY
(307) 261QWEST CORPORATIONCASPER
(307) 262CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCASPER
(307) 263CSC WIRELESS, LLCCHEYENNE
(307) 264BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER]JACKSON
(307) 265QWEST CORPORATIONCASPER
(307) 266QWEST CORPORATIONCASPER
(307) 267NEW CINGULAR WIRELESS PCS, LLCCASPER
(307) 268QWEST CORPORATIONCASPER
(307) 269LEVEL 3 COMMUNICATIONS, LLC - WYWHEATLAND
(307) 270UNION TELEPHONE COMPANYCOKEVILLE
(307) 271LEVEL 3 COMMUNICATIONS, LLC - WYPOWELL
(307) 272CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCODY
(307) 273CENTURYTEL OF WYOMING, INC. DBA CENTURYLINKFARSON
(307) 274MCIMETRO ACCESS TRANSMISSION SERVICES LLCCHEYENNE
(307) 275CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCHEYENNE
(307) 276CENTURYTEL OF WYOMING, INC. DBA CENTURYLINKBIG PINEY
(307) 277CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCASPER
(307) 278LEVEL 3 COMMUNICATIONS, LLC - WYBUFFALO
(307) 279ALL WEST COMMUNICATIONS - WYCOKEVILLE
(307) 280UNION TELEPHONE COMPANYFARSON
(307) 281CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYSUNDANCE
(307) 282CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYSUNDANCE
(307) 283RANGE TEL COOP INCSUNDANCE
(307) 284SILVER STAR TELEPHONE COMPANY, INC. - WYJACKSON
(307) 285AIRUS, INC. - WYBUFFALO
(307) 286CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCHEYENNE
(307) 287CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WYCHEYENNE
(307) 288LEVEL 3 COMMUNICATIONS, LLC - WYEVANSTON
(307) 289COMCAST IP PHONE, LLCCHEYENNE
(307) 290NEW CINGULAR WIRELESS PCS, LLCSUNDANCE
(307) 291COMMIO, LLCCODY
(307) 292HD CARRIER LLCCHEYENNE
(307) 293ONVOY, LLC - WYGUERNSEY
(307) 294TELEPORT COMMUNICATIONS AMERICA WY-LLCBIG PINEY
(307) 295ONVOY, LLC - WYTORRINGTON
(307) 296ONVOY, LLC - WYCODY
(307) 297UINTAH BASIN ELECTRONIC TELECOMMUNICATIONSGREENRIVER
(307) 298LEVEL 3 COMMUNICATIONS, LLC - WYDOUGLAS
(307) 299NEW CINGULAR WIRELESS PCS, LLCGILLETTE
(307) 300ONVOY, LLC - WYPOWELL
(307) 301IP HORIZON LLCCASPER

Showing first 100 of 479 prefixes.

Frequently Asked Questions

Where is area code 307?
Area code 307 is located in Wyoming, covering cities including Cheyenne, Casper, Laramie.
What time zone is area code 307?
Area code 307 is in the Mountain Time Zone (MT, UTC-7).
What state is area code 307?
Area code 307 is in Wyoming.