Area code 414: where it is and who calls from it
Area code 414 is in Wisconsin.
Wisconsin (Milwaukee County includes cities of Milwaukee, West Allis, Oak Creek, and others)
| Where | Wisconsin |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 1947 |
| Overlay | No |
| Prefixes assigned | 552 of 792 possible (70%) |
Where 414 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 414, with how many prefixes each has.
Who holds 414 numbers
- Mobile carrier 34%
- Local phone company 34%
- Internet / business phone carrier 24%
- Paging service 5%
- Phone company 2%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| AT&T (local phone) | Local phone company | 189 | 34% |
| T-Mobile (including Sprint) | Mobile carrier | 54 | 10% |
| AT&T Mobility | Mobile carrier | 51 | 9% |
| UScellular | Mobile carrier | 47 | 9% |
| Onvoy | Internet / business phone carrier | 39 | 7% |
| Verizon Wireless | Mobile carrier | 25 | 5% |
| Level 3 (Lumen) | Internet / business phone carrier | 21 | 4% |
| Spok | Paging service | 18 | 3% |
| Teleport Communications America, LLC Wi | Internet / business phone carrier | 18 | 3% |
| Windstream (PAETEC) | Internet / business phone carrier | 13 | 2% |
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 414?
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 414 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.