North American Numbers Source-cited · ownership disclosed
Area code
274
In service
United States · since 2023

Green Bay / Fox Cities (overlay)

An all-services distributed overlay of area code 920, covering the identical eastern Wisconsin geography. In service since May 5, 2023.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Green Bay / Fox Cities (overlay)
Type
geographic
Status
in service
In service since
2023
Projected exhaust
2059 Q2

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 274 is

Same as 920 — 18 counties of eastern Wisconsin including Brown, Calumet, Door, Fond du Lac, Manitowoc, Outagamie, Sheboygan, Winnebago..

Communities served wholly or partly by 274:

Green BayAppletonOshkoshFond du LacSheboyganSturgeon Bay

Cities are shared with 920; 274 numbers are assigned across the whole 920 footprint.

B · Relationships

How it relates to other codes

The codes 274 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2023 920 Green Bay / Fox Cities Overlays the entire 920 numbering plan area.
What's changing. Overlay of 920. Assigned 2023 — re-check NANPA for current fill/status.
C · History

How 274 got here

2023-05-05
Activated as an all-services distributed overlay of area code 920.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
43
Prefixes available
757
Thousands-blocks assigned
108

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 274 with another code →
Sources
Wikipedia ↗
Area code 274
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.