North American Numbers Source-cited · ownership disclosed
Area code
715
In service
United States · since 1947

Northern Wisconsin

One of Wisconsin's two original 1947 area codes, covering the entire northern half of the state including Eau Claire, Wausau, and Superior. Overlaid by 534 since 2010.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Northern Wisconsin
Type
geographic
Status
in service
In service since
1947
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 715 is

Northern Wisconsin — roughly 36 counties including Ashland, Bayfield, Chippewa, Clark, Douglas, Dunn, Eau Claire, Lincoln, Marathon, Oneida, Portage, Rusk, Sawyer, St. Croix, Vilas, Washburn, Wood..

Communities served wholly or partly by 715:

Eau ClaireWausauSuperiorStevens PointRhinelanderHaywardRice Lake

County count varies slightly by source due to shared border counties with 920 and 608.

B · Relationships

How it relates to other codes

The codes 715 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?

Related · 1947 414 Milwaukee The other original 1947 Wisconsin code (southern/eastern).
Spawned · 1955 608 Madison 608 was formed partly from a 1955 border rearrangement of 715 (and 414).
Overlay · 2010 534 Northern Wisconsin (overlay) All-services overlay covering the identical 715 geography.
What's changing. Overlaid by 534 since 2010 (ten-digit dialing required). Was never split or overlaid before 2010.
C · History

How 715 got here

1947-10
Established as one of the original North American area codes, covering northern Wisconsin.
Source: Wikipedia
2010
Overlay area code 534 added for number relief (exact in-service day UNVERIFIED).
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
799
Prefixes available
1
Thousands-blocks assigned
2,755

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

Compare 715 with another code →
Sources
Wikipedia ↗
Area code 715
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.