307 area code: location, time zone and numbers
The 307 area code serves Wyoming as a US telephone area code and has done so since 1947.
- Location
- Every part of Wyoming
- Service began
- 1947
- Local time zone
- Uses Mountain time
- Overlay
- None: its area has this code and no other
- Calls within the area
- Dialling uses 7 digits
- Rate-centre locations
- 92
- Exhaust projection
- 2054
- Code for the country
- +1 (United States)
The area code report and rate-centre report come from NANPA public reports, with a file dated 11/01/2026. The NANPA projections 2026-1 (April 2026) supply the projected exhaust year. This is an unofficial NANPA site.
Get a number using 307
You can get a 307 number in two ways. When you sign up for a provider plan, the provider assigns a new number from those it holds in the code. A seller offers numbers already in its possession, often featuring a pattern, at a one-time price; afterward, you move it to a provider.
Providers, ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers that list local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
We may receive a referral fee from certain sellers and providers. The order always remains based on first-year cost. How we earn
Places in the 307 area code
For 307, NANPA lists 92 rate centres. A rate centre is a local calling area where numbers are assigned:
The list includes Midwest, Meeteetse, Medicine Bow, Manila, Mammoth, Lyman, Lusk, Lovell, Lingle, Leigh Canyon, Laramie, Lander, Lake, La Barge and Lagrange. It also includes Kaycee, Kemmerer, Jackson, Jeffrey City, Hyattville, Hulett, Hanna, Hamilton Dome, Guernsey, Greybull, Green River, Glenrock, Glendo, Gillette and Gas Hills. There are also Freedom, Frannie, Farson, Evanston, Encampment, Dubois, Douglas, Decker, Daniel, Crowheart, Cokeville, Cody, Clearmont, Clark and Chugwater. The list continues with Cheyenne, Casper, Carpenter, Burns, Burlington, Buffalo, Border, Big Piney, Basin, Baggs, Arvada, Alta, Alpine and Albin. A final group includes Afton, while another 32 remain unlisted.
307 area code questions
Which area does 307 cover?
Wyoming uses 307.
What country code does a 307 number have?
+1. Because 307 belongs to the North American Numbering Plan, calls from outside the country use +1 307 followed by the 7-digit number.
What time is it in the 307 area code?
The 307 area uses Mountain time.
Who uses a 307 number to call?
Calls can come from homes, mobile phones and local businesses with numbers in this code, as well as from people who fake a local number. When a 307 number appears on your screen, it shows where that number was assigned rather than who is calling.