North American Numbers Source-cited · ownership disclosed
Area code
534
In service
United States · since 2010

Northern Wisconsin (overlay)

An overlay of area code 715 covering the same northern Wisconsin geography, added in 2010 to relieve number exhaustion driven by cellular demand.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Northern Wisconsin (overlay)
Type
geographic
Status
in service
In service since
2010
Projected exhaust
2070 Q4

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 534 is

Same as 715 — northern Wisconsin (~36 counties) including Ashland, Bayfield, Douglas, Eau Claire, Oneida, Sawyer, Vilas, Washburn..

Communities served wholly or partly by 534:

Eau ClaireWausauSuperiorStevens PointRhinelanderHaywardRice Lake

Cities are shared with 715; 534 numbers are assigned across the whole 715 footprint.

B · Relationships

How it relates to other codes

The codes 534 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 · 2010 715 Northern Wisconsin Overlays the entire 715 numbering plan area.
What's changing. Overlay of 715 (both codes serve identical geography).
C · History

How 534 got here

2010
Implemented as an all-services overlay of area code 715 to accommodate cellular-driven demand (exact in-service day UNVERIFIED).
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
113
Prefixes available
687
Thousands-blocks assigned
562

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

Compare 534 with another code →
Sources
Wikipedia ↗
Area code 534
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.