274 Area Code — Green Bay, WI
Area code 274 serves Green Bay and 2 other cities in Wisconsin. Local time follows America/Chicago. It overlays with 920, so 10-digit dialling is required.
- State
- Wisconsin
- Primary city
- Green Bay
- Timezone
- America/Chicago
- In service since
- 2024
- Type
- Overlay
- Overlay codes
- 920
Overlay of 920
Cities Served by 274
The 274 area code covers 3 cities and communities in Wisconsin.
- Green Bay
- Appleton
- Oshkosh
About Area Code 274
Area code 274 is a North American Numbering Plan (NANP) area code that has been in service since 2024. It is administered by NANPA on behalf of the FCC and serves the Wisconsin region anchored on Green Bay.
274 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (920). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 274 are portable: a person who moved away from Green Bay may still carry a 274 mobile number on their device. If you receive an unexpected call from a 274 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 (920). See the related codes section below to explore the rest of Wisconsin.
Other Wisconsin Area Codes
Continue exploring the Wisconsin numbering plan.
274 Area Code FAQ
Where is area code 274?
Area code 274 is located in Wisconsin, primarily serving Green Bay and surrounding cities including Appleton, Oshkosh. The region operates on CT (America/Chicago) time.
What state is 274 area code?
274 is a Wisconsin area code. It was put into service in 2024 as an overlay and shares its geographic footprint with overlay code 920.
Is 274 a scam area code?
274 is a legitimate North American area code allocated by NANPA to Wisconsin. Like any geographic area code, scammers sometimes spoof 274 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 274 use?
Area code 274 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 274 phone number?
Yes. Use the reverse lookup widget above to enter a full 274 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 274 and 920?
274 and 920 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.