Wisconsin · Central Time
920 Area Code
Area code 920 is in Wisconsin, serving northeastern and east-central Wisconsin, including Green Bay, Appleton, Oshkosh and Sheboygan. It is in the Central Time zone. It shares its territory with overlay code 274, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 920 area code?
920 is a Wisconsin area code covering northeastern and east-central Wisconsin, including Green Bay, Appleton, Oshkosh and Sheboygan. In the wider directory it sits in the Midwest region.
Cities in the 920 area code
- Green Bay
- Appleton
- Oshkosh
- Sheboygan
- Fond du Lac
- De Pere
- Manitowoc
- Neenah
- Kaukauna
- Menasha
- Watertown
- Beaver Dam
- Two Rivers
- Sturgeon Bay
Counties served by 920
Brown County, Outagamie County, Winnebago County, Sheboygan County, Fond du Lac County, Manitowoc County, Calumet County, Dodge County, Door County and Kewaunee County.
920 overlay codes and dialing
The 920 territory is covered by an overlay of 2 area codes: 274, 920. All of them serve the same geographic area, and the original code is 920. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 920 area code
920 went into service on July 26, 1997, created when it was split from 414. It serves Green Bay and the surrounding part of Wisconsin, and today shares its territory with overlay code 274. For how codes are created, split, and overlaid, see how area codes work.
Is 920 a scam or spam risk?
920 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 920 number on your screen is no guarantee the caller is in Green Bay, WI or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Wisconsin area codes
Explore more
See every code in Wisconsin, compare codes across the Midwest region, or view all Central Time codes. You can also browse the 9XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
920 area code FAQ
Where is the 920 area code?
The 920 area code is in Wisconsin, covering northeastern and east-central Wisconsin, including Green Bay, Appleton, Oshkosh and Sheboygan, in the Midwest region.
What cities are in the 920 area code?
Cities in the 920 area code include Green Bay, Appleton, Oshkosh, Sheboygan, Fond du Lac, De Pere, Manitowoc, Neenah, Kaukauna and Menasha.
What time zone is 920 in?
920 is in the Central Time zone.
What is the overlay for the 920 area code?
920 shares its territory with 274. Both codes (274, 920) serve the same area, so 10-digit dialing is required for every call.
When did the 920 area code start?
920 went into service on July 26, 1997.
Do I have to dial 10 digits for 920?
Yes. Because 920 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 920 a toll-free or premium code?
No. 920 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.