🇺🇸 United States · Wyoming

Area code 307

Area code 307 is a telephone area code in Wyoming, United States, covering Casper, Cheyenne, Gillette, Jackson, Sheridan, Laramie and more. Local time is UTC−7 (UTC−6 in summer). Numbers look like (307) 234-5678, or +1 307 234 5678 from abroad.

State: Wyoming
Time zone: Denver UTC−7 (UTC−6 in summer)
Local time now: –
Dial from abroad: +1 307

Places in area code 307

Cities and towns with telephone exchanges in the 307 area code, most exchanges first.

Casper
Cheyenne
Gillette
Jackson
Sheridan
Laramie
Rock Springs
Cody
Rawlins
Lander
Riverton
Afton
Pine Bluffs
Big Piney
Sundance
Wheatland
Saratoga
Lusk
Worland
Douglas
Pinedale
Baggs
Glenrock
Dubois

How to dial area code 307

Calling from	You dial
Inside the 307 area	307 234 5678 (10 digits)
Elsewhere in the US & Canada	1 307 234 5678
Any mobile phone, anywhere	+1 307 234 5678
UK, Europe, India and most countries	00 1 307 234 5678
Australia	0011 1 307 234 5678

Area code 307: FAQ

Where is area code 307?

Area code 307 is in Wyoming, United States and serves Casper, Cheyenne, Gillette, Jackson, Sheridan, Laramie. and other places

What time zone is area code 307 in?

Area code 307 is in the America/Denver time zone (UTC−7 (UTC−6 in summer)).

How do I call a 307 number from outside the US and Canada?

Dial your exit code (00 in most countries, or + on a mobile), then 1, then 307 and the seven-digit number. Example: +1 307 234 5678.

Is a call from area code 307 a scam?

Area code 307 is a regular North American area code, but caller ID can be spoofed: scammers often show local-looking numbers. Do not call back unknown numbers that ask for money or personal data, and check the number with the phone number validator to see whether it is valid and whether it is a mobile, landline or VoIP number.

Phone number API

Check 307 numbers in your app

numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.

Read the documentation

100 free requests every month. No credit card required.

GET https://api.numlookupapi.com/v1/validate/+13072345678

{
  "valid": true,
  "number": "12069220880",
  "local_format": "2069220880",
  "international_format": "+12069220880",
  "country_prefix": "+1",
  "country_code": "US",
  "country_name": "United States of America",
  "location": "Seattle",
  "line_type": "landline",
  "e164_format": "+12069220880",
  "national_format": "(206) 922-0880"
}