Area Code 274
Wisconsin
Area code 274 serves Wisconsin, primarily Green Bay, in the Central Time (CT) time zone. It is an overlay area code sharing territory with area code 920.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 920 (Green Bay).
In service since: 05-May-2023
Demographics & Economics
- Total Population
- 1,614,354
- Population Density
- 350 people/sq miabove U.S. average (U.S.: 93 people/sq mi)
- Median Household Income
- $80,604near U.S. median (U.S.: $75,144)
- Poverty Rate
- 7.7%below U.S. average (U.S.: 11.5%)
- Unemployment Rate
- 3.4%near U.S. average (U.S.: 3.6%)
- Education Attainment
- Bachelor's Degree+36.5%near U.S. average (U.S.: 33.7%)High School or Lower28.9%
Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.
See how this area code compares to all US area codes in the Statistics dashboard.
Time Zone
- Central Time (CT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
WI
Major Cities
- Green Bay
- Appleton
- Oshkosh
- Sheboygan
- Fond du Lac
- Manitowoc
- Neenah
- De Pere
- Watertown
- Howard
- Fox Crossing
- Oconomowoc
- Menasha
- Kaukauna
- Ashwaubenon
- Beaver Dam
- Bellevue
- Allouez
- Harrison
- Suamico
- Greenville
- Fort Atkinson
- Little Chute
- Waupun
and 148 more cities
Historical Timeline of Area Code 274
Area code 274 was activated on May 5, 2023 as an all-services overlay for area code 920, covering 18 counties in northeastern Wisconsin. The code traces its lineage to area code 414, one of the original 86 North American area codes assigned in 2008, which was split to create 920 in 1997 before the 274 overlay was approved. (Source: Wikipedia)
Key milestones:
- 1947: Wisconsin assigned original area codes 414 (south/east) and 715 (northwest) (Source: Wikipedia)
- 1955: Area code 608 split from 920, serving Madison and western Wisconsin
- 1997: Area code 920 created as split from 920, covering northeastern Wisconsin including Green Bay and Fox River Valley (effective July 26, 1997) (Source: Wikipedia)
- 1999: Area code 262 split from 920, covering southeastern Wisconsin outside Milwaukee County (effective September 25, 1999)
- 2008: Wisconsin PSC approved all-services distributed overlay for 920 NPA in Docket 5-TN-106 (December 8, 2008), creating area code 274 (Source: WisPolitics)
- 2010: PSC ordered postponement of 920/274 overlay due to changed exhaustion forecasts (November 15, 2010) (Source: Wisconsin PSC)
- 2012 (Wikipedia): PSC issued Supplemental Order suspending implementation schedule, directing NANPA to establish triggers for reconvening (November 23, 2012)
- 2021: Mandatory 10-digit dialing took effect across 920 NPA due to FCC requirement for 988 Suicide and Crisis Lifeline (October 24, 2021)
- 2022: NANPA convened industry meeting and established revised implementation schedule; PL-593 issued (June 2, 2022)
- 2023: Area code 274 went into service as all-services overlay on 920 (May 5, 2023) (Source: WisPolitics)
Regulatory History
The 920/274 overlay was governed primarily by Wisconsin PSC Docket 5-TN-106, with implementation managed through multiple NANPA planning letters spanning 2008 to 2022. The FCC's involvement was limited to the national 988 mandate that accelerated 10-digit dialing adoption in the 920 NPA. (Source: Wikipedia)
| Year | Event | Docket | Regulatory Action and Impact |
|---|---|---|---|
| 2008 | Overlay Approval | 5-TN-106 | Wisconsin PSC approved all-services distributed overlay as relief method for 920 NPA. Area code 274 created; original implementation set for 2012. (Source: WisPolitics) |
| 2008 | Initial Planning Letter | PL-385 | NANPA established initial implementation schedule: permissive 10-digit dialing May 14, 2011; mandatory Feb 11, 2012; CO activation Mar 10, 2012. |
| 2010 | Schedule Revision | PL-417 | Revised implementation schedule after PSC Supplemental Final Decision (Nov 15, 2010). New schedule: permissive May 4, 2013; mandatory Jan 25, 2014; CO activation Feb 22, 2014. |
| 2012 | Schedule Suspension | 5-TN-106 | PSC Supplemental Order suspended 920/274 implementation schedule due to changed exhaustion forecasts. Directed NANPA to establish triggers to reconvene when CO codes fall to 50 or exhaust is within 24 months. (Source: Wisconsin PSC) |
| 2021 | 988 Lifeline Mandate | FCC Order | 920 NPA transitioned to mandatory 10-digit dialing per FCC requirement for 988 Suicide and Crisis Lifeline. Required all 920 subscribers to dial 10 digits. (Source: Wikipedia) |
| 2022 | Final Schedule | PL-593 | Final revised implementation schedule. Network preparation and customer education August 5, 2022 to May 5, 2023. CO code activation May 5, 2023. |
| 2023 | In-Service Activation | NANPA | Area code 274 activated as all-services overlay on 920. Available for new number assignments across 18-county northeast Wisconsin region. (Source: WisPolitics) |
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 274).
| County | Population | Share |
|---|---|---|
| Outagamie, WI | 376,842 | 17.9% |
| Brown, WI | 326,049 | 15.4% |
| Winnebago, WI | 273,953 | 13.0% |
| Fond du Lac, WI | 160,923 | 7.6% |
| Calumet, WI | 137,674 | 6.5% |
| Dodge, WI | 124,095 | 5.9% |
| Sheboygan, WI | 122,069 | 5.8% |
| Manitowoc, WI | 113,241 | 5.4% |
| Jefferson, WI | 80,635 | 3.8% |
| Waushara, WI | 48,720 | 2.3% |
| Oconto, WI | 48,479 | 2.3% |
| Door, WI | 44,870 | 2.1% |
| Green Lake, WI | 40,137 | 1.9% |
| Shawano, WI | 36,127 | 1.7% |
| Waupaca, WI | 32,639 | 1.5% |
| Kewaunee, WI | 28,908 | 1.4% |
| Columbia, WI | 22,425 | 1.1% |
| Marquette, WI | 18,706 | 0.9% |
| Rock, WI | 18,604 | 0.9% |
| Dane, WI | 14,143 | 0.7% |
| Washington, WI | 12,840 | 0.6% |
| Marinette, WI | 8,431 | 0.4% |
| Ozaukee, WI | 6,937 | 0.3% |
| Menominee, WI | 6,469 | 0.3% |
| Waukesha, WI | 3,483 | 0.2% |
| Portage, WI | 3,245 | 0.2% |
Area Code 274 Family Tree
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Area code 274 was originally assigned in 05-May-2023 to serve WI.
Call Context
This area code covers a metropolitan region in WI with moderate to high population density, centered on Green Bay and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 274.
Other Area Codes in Wisconsin
Area codes that also serve Wisconsin, linked for easy comparison.