The 274 area code covers the same area as 920, including Green Bay, Appleton and 116 more places in Wisconsin.
Area code 274 is in Wisconsin, on Central Time. In the 274 area, phone numbers are given out most in Brown County, then Outagamie and Winnebago counties. It has been in service since May 5, 2023. 920 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Wisconsin, mostly Brown County, Outagamie County and Winnebago County
- Time zone
- Central Time
- In service since
- May 5, 2023
- Shares its area with
- 920 (since 1997)
- Prefixes in use
- 29
- How to dial
- Local calls need all 10 digits: 274-555-0142.
Find out who called you from a 274 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (274) number is on today, use our free carrier lookup.
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Green Bay holds 14% of the phone prefixes in area code 274.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 29 prefixes in use shows where 274 numbers are actually given out.
- Green Bay4 prefixes, 14%
- Manitowoc2 prefixes, 7%
- Winneconne1 prefix, 3%
- New London1 prefix, 3%
- Two Rivers1 prefix, 3%
- Algoma1 prefix, 3%
- Columbus1 prefix, 3%
- Luxemburg1 prefix, 3%
Also served: Beaver Dam, Watertown, Sturgeon Bay and Fort Atkinson and 106 smaller places.
Of the carriers named here, T-Mobile holds the most phone number prefixes in area code 274: 7 of 29.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 29 prefixes in use in 274 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| T-MobileMobile network | 7 | 24% |
| Metro by T-MobileT-Mobile's prepaid brand | 4 | 14% |
| AT&T MobilityMobile network | 2 | 7% |
| Ahoi | 1 | 3% |
| Cellcom | 1 | 3% |
| Leap Telecom | 1 | 3% |
| 5 other carriers | 13 | 45% |
100% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
274 started in 2023 as an overlay on 920, and its ground has not changed since.
2023
274 starts on May 5, 2023, as an overlay on 920: new numbers on the same ground.
A 274 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 274 are 414, 262 and 608.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Wisconsin has 7 other area codes.
These are the questions people ask most about area code 274.
Where is area code 274?
274 covers Green Bay, Appleton, Oshkosh and Fond Du Lac and 114 more places in Wisconsin. In the 274 area, phone numbers are given out most in Brown County, then Outagamie and Winnebago counties.
What state is area code 274 in?
Wisconsin. 274 is a Wisconsin area code on Central Time.
What cities use area code 274?
The places holding the most 274 prefixes are Green Bay, Appleton, Oshkosh, Fond Du Lac, Sheboygan, Manitowoc, De Pere and Neenah, out of 118 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 274?
No single phone company owns 274. NANPA's records list its 29 prefixes across many carriers, and the ones named on this page include T-Mobile, Metro by T-Mobile and AT&T Mobility. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 274 in?
274 is on Central Time.
When did area code 274 start?
274 went into service on May 5, 2023, as an overlay on 920: new numbers for the same area.
Is 274 the same area as 920?
Yes. 920 (since 1997) covers the same ground as 274. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 274 number?
Local calls need all 10 digits: 274-555-0142.
Is 274 a toll-free number?
No. 274 is a regular area code for Green Bay and Appleton in Wisconsin, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 274?
The closest are 414 (Milwaukee, Wisconsin), 262 (Waukesha, Wisconsin), 608/353 (Madison, Wisconsin) and 715/534 (Eau Claire, Wisconsin), measured between the centres of each area.
Who called me from a 274 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 274 a scam?
274 is a real Wisconsin area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.