920 area code — Green Bay, WI geographic
The 920 area code covers Green Bay, Wisconsin, Central time zone, and dates back to July 26, 1997. The same territory is also served by its overlay code (274/920 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 784 working prefixes, held by 64 different carriers. Of these, 600 are pooled prefixes shared by multiple carriers. Numbers are anchored to 126 rate centers — billing localities that fix where each prefix belongs.
The current NANPA exhaust forecast for the 274/920 complex is 2Q 2059.
Local calls inside 920 are dialed 10D; 1+10 digit dialing for all calls permissible at each service providers discretion..
Practical takeaway: the 920 label narrows geography to Wisconsin, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
The code was carved out of 414 (1997). As demand grew it in turn gave rise to 274 (2023).
Largest localities in 920
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Green Bay | 110 | 274 |
| Appleton | 94 | — |
| Oshkosh | 40 | — |
| Fond Du Lac | 34 | — |
| Sheboygan | 33 | 274 |
| Manitowoc | 24 | 274 |
| De Pere | 21 | — |
| Neenah | 20 | 274 |
| Beaver Dam | 19 | — |
| Watertown | 16 | — |
FAQ
Why am I getting spam calls from 920 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 920 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 920 number from?
920 is assigned to Green Bay and surrounding areas of Wisconsin in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 920 a toll-free number?
No. 920 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.