Wisconsin Area Codes
Data last updated: March 10, 2026
Area Codes in Wisconsin
| NPA | Major Cities | Status | Exchanges | Overlay |
|---|---|---|---|---|
| 262 | Milwaukee, Wauwatosa, Pewaukee | Active | 786 | No |
| 274 | Wauwatosa, Appleton, Green Bay | Active | 786 | Yes |
| 353 | Madison, La Crosse | Active | 786 | Yes |
| 414 | Milwaukee, Wauwatosa, Pewaukee | Active | 785 | No |
| 534 | Eau Claire, Green Bay, Wausau | Active | 785 | Yes |
| 608 | Madison, La Crosse, Fitchburg | Active | 786 | Yes |
| 715 | Eau Claire, Green Bay, Wausau | Active | 786 | Yes |
| 920 | Green Bay, Milwaukee, Appleton | Active | 786 | Yes |
Top Carriers in Wisconsin
| Carrier | OCN | NXX Count |
|---|---|---|
| WISCONSIN BELL INC | 9327 | 593 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 307 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 276 |
| UNITED STATES CELLULAR - WI | 6274 | 210 |
| ONVOY, LLC - WI | 225C | 208 |
| T-MOBILE USA, INC. | 6529 | 173 |
| FRONTIER NORTH INC. - WI | 0886 | 163 |
| LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | 158 |
| TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | 117 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 83 |