North American Numbers Source-cited · ownership disclosed
Area code
801
In service
United States · since 1947

Salt Lake City

Area code 801 serves the Wasatch Front, including Salt Lake City, Ogden and Provo, overlaid by 385. It was an original 1947 code covering all of Utah until 435 split off in 1997.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Salt Lake City
Type
geographic
Status
in service
In service since
1947
Projected exhaust
2035 Q3

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 801 is

Wasatch Front: Davis, Morgan, Salt Lake, Utah and Weber counties..

Communities served wholly or partly by 801:

Salt Lake CityOgdenProvoOremSandy
B · Relationships

How it relates to other codes

The codes 801 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?

Spawned · 1997 435 St. George / rest of Utah 435 split off from 801 on 1997-09-21 to serve the rest of Utah; 801 kept the Wasatch Front.
Overlay · 2008 385 Salt Lake City (overlay) 385 overlaid the 801 area beginning 2008-06-01.
What's changing. Overlaid by 385; ten-digit dialing mandatory since 2009-06-01.
C · History

How 801 got here

1947
Established as one of the original North American area codes, covering all of Utah.
Source: Wikipedia
1997-09-21
Southern and eastern Utah split off as area code 435; 801 reduced to the Wasatch Front.
Source: Wikipedia
2008-06-01
Area code 385 entered service as an overlay, with a one-year permissive dialing period.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
798
Prefixes available
2
Thousands-blocks assigned
2,420

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

Compare 801 with another code →
Sources
Wikipedia ↗
Area codes 801 and 385
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.