920 Area Code — Green Bay, WI
Area code 920 serves Green Bay and 4 other cities in Wisconsin. Local time follows America/Chicago. It overlays with 274, so 10-digit dialling is required.
- State
- Wisconsin
- Primary city
- Green Bay
- Timezone
- America/Chicago
- In service since
- 1997
- Type
- Geographic
- Overlay codes
- 274
Cities Served by 920
The 920 area code covers 5 cities and communities in Wisconsin.
- Green Bay
- Appleton
- Oshkosh
- Sheboygan
- Manitowoc
About Area Code 920
Area code 920 is a North American Numbering Plan (NANP) area code that has been in service since 1997. It is administered by NANPA on behalf of the FCC and serves the Wisconsin region anchored on Green Bay.
920 now shares its territory with an overlay code (274). 10-digit dialling is required for local calls within this region because the same 7-digit number can be assigned under either code.
Mobile numbers in 920 are portable: a person who moved away from Green Bay may still carry a 920 mobile number on their device. If you receive an unexpected call from a 920 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Wisconsin, you may also interact with neighbouring or overlay codes (274). See the related codes section below to explore the rest of Wisconsin.
Other Wisconsin Area Codes
Continue exploring the Wisconsin numbering plan.
920 Area Code FAQ
Where is area code 920?
Area code 920 is located in Wisconsin, primarily serving Green Bay and surrounding cities including Appleton, Oshkosh, Sheboygan. The region operates on CT (America/Chicago) time.
What state is 920 area code?
920 is a Wisconsin area code. It was put into service in 1997 and shares its geographic footprint with overlay code 274.
Is 920 a scam area code?
920 is a legitimate North American area code allocated by NANPA to Wisconsin. Like any geographic area code, scammers sometimes spoof 920 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 920 use?
Area code 920 operates on CT (America/Chicago). Numbers in this area code follow standard Wisconsin time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 920 phone number?
Yes. Use the reverse lookup widget above to enter a full 920 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 920 and 274?
920 and 274 cover the same Wisconsin geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.