Area code 274: where it is and who calls from it
Area code 274 is in Wisconsin.
Wisconsin (Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Marquette, Fond du Lac, and parts of eastern Wisconsin—but not in Milwaukee County)
| Where | Wisconsin |
|---|---|
| Time zone | Central Time · local time |
| In service since | 2023 |
| Overlay | Yes, with 920 |
| Prefixes assigned | 29 of 792 possible (4%) |
Overlay: 274 covers the same area as 920. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 274 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 274, with how many prefixes each has.
Who holds 274 numbers
- Mobile carrier 48%
- Internet / business phone carrier 34%
- Phone company 17%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Onvoy | Internet / business phone carrier | 9 | 31% |
| T-Mobile (including Sprint) | Mobile carrier | 7 | 24% |
| MetroPCS (T-Mobile) | Mobile carrier | 4 | 14% |
| AT&T Mobility | Mobile carrier | 2 | 7% |
| Cellcom | Phone company | 1 | 3% |
| Leap Telecom | Phone company | 1 | 3% |
| Wisconsin Rsa #10 Limited Partnership | Phone company | 1 | 3% |
| Wavenation | Phone company | 1 | 3% |
| Ahoi | Phone company | 1 | 3% |
| Terra Nova Telecom | Internet / business phone carrier | 1 | 3% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number.
States served: Wisconsin.
Other area codes in Wisconsin
Got a call from 274?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 274 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.