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Area code 307

Area code 307 covers Cheyenne, Wyoming. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Wyoming Major City: Cheyenne Mountain Time (MT) Overlay: None
01 / WHERE IT IS

Where is area code 307?

Area code 307 is assigned to Cheyenne and the surrounding region in Wyoming. Calls to numbers that start with 307 are routed to this area.

Area code 307 is not currently part of an overlay: it serves its territory on its own.

Counties covered

Laramie CountyNatrona CountyFremont CountyTeton CountyLincoln CountySweetwater CountyPark CountyCarbon CountyCampbell CountySheridan CountyAlbany CountyUinta CountyCrook CountyGoshen CountyConverse CountySublette CountyPlatte CountyJohnson County

Line types

  • Mobile 39.8%
  • Landline 60.2%
02 / MAP

Area code 307 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Cheyenne

This area code is in the Mountain Time (MT) time zone.

Local timeCheyenne, WY--:--:--

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America/DenverLive
04 / HOW TO DIAL

How to call Cheyenne

WITHIN THE US307 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 307 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 307 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 307 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 307 555 0123
🇦🇺Australia0011 1 307 555 0123
🇯🇵Japan010 1 307 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 307

Share of the number blocks by carrier and line type.

Landline

Lumen Technologies
40%
Sinch
15%
Bandwidth
6%
RT COMMUNICATIONS
6%
UNION TEL. CO.
4%
Others
29%

Mobile

Union Telephone
33%
Verizon Wireless
30%
AT&T Mobility
24%
T-MOBILE USA
7%
GOLD STAR COMMUNICATIONS
2%
Others
4%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 307

495 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(307) 200 Landline Jackson Lumen TechnologiesLEVEL 3 COMMUNICATIONS, LLC - WY
(307) 201 Landline Jackson Lumen TechnologiesLEVEL 3 COMMUNICATIONS, LLC - WY
(307) 202 Mobile Powell AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC
(307) 203 Mobile Jackson T-MOBILE USAT-MOBILE USA, INC.
(307) 204 Landline Cody AirusAIRUS, INC. - WY
(307) 205 Landline Lingle Lumen TechnologiesLEVEL 3 COMMUNICATIONS, LLC - WY
(307) 206 Landline Lander Verizon BusinessMCIMETRO ACCESS TRANSMISSION SERVICES LLC
(307) 207 Landline Lake AirusAIRUS, INC. - WY
(307) 209 Mobile Rock Springs Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY
(307) 210 Mobile Southeast Sheridan AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC

Showing 10 of 495 prefixes

07 / FAQ

Frequently asked questions about area code 307

Where is area code 307 used?
Area code 307 serves Cheyenne and the surrounding area in Wyoming, including Laramie County, Natrona County, Fremont County, Teton County, Lincoln County.
What city is area code 307 from?
The main city of area code 307 is Cheyenne, WY.
What time zone is area code 307 in?
Area code 307 is in the Mountain Time (MT) time zone (America/Denver).
Is 307 an overlay area code?
No. Area code 307 is not currently part of an overlay.
How do I call a number with area code 307 from the United States?
Dial the 10 digits: 307 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 307 number from another country?
Dial your country's exit code (or +), then 1, then 307 and the seven-digit number. From a mobile you can use +1 307 XXX XXXX.
Which carriers use area code 307?
Most landline blocks belong to Lumen Technologies and most mobile blocks to Union Telephone. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 307 for landlines, mobiles or both?
Both. About 60.2% of the number blocks are landline, 39.8% mobile.
How do I save a 307 number in WhatsApp or my phone?
Save it in international format: +1 307 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 307?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

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