274 area code — Green Bay, WI geographic
If a call shows area code 274, the number was issued in the Green Bay area — a code active since 2023, on Central time. Together with 920 it forms the 274/920 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.
NANPA lists 28 active NXX prefixes in 274, assigned to 11 carriers. 28 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 25 rate centers (billing localities).
Official projections put exhaust for the 274/920 complex at 2Q 2059.
Its parent code is 920, which it left in 2023.
The dialing plan is 10D for home-NPA local calls and 10D across codes.
Practical takeaway: the 274 label narrows geography to Wisconsin, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
Largest localities in 274
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Green Bay | 3 | 920 |
| Manitowoc | 2 | 920 |
| Winneconne | 1 | 920 |
| New London | 1 | 920 |
| Two Rivers | 1 | 920 |
| Algoma | 1 | 920 |
| Columbus | 1 | 920 |
| Luxemburg | 1 | 920 |
| Neshkoro | 1 | 920 |
| Omro | 1 | 920 |
FAQ
Is 274 a toll-free number?
No. 274 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 920 and 274 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 274/920 complex shares one service area, and local calls are dialed with 10 digits.
Will 274 run out of numbers?
NANPA's current forecast projects exhaust in 2Q 2059 — decades of capacity remain.