Area Code 801
Utah
Area code 801 serves Utah, primarily Salt Lake City, in the Mountain Time (MT) time zone. It has served the region since 01-Jan-1947.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 385 (Salt Lake City).
In service since: 01-Jan-1947
Area Code Splits
Parts of this area code’s original geographic region were later assigned new area codes through splits. When a split occurs, some customers in the original area code region are assigned the new area code.
Split into: area code 435 (St. George).
Demographics & Economics
Demographic Data Unavailable for Area Code 801
County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.
Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.
Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.
Time Zone
- Mountain Time (MT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
UT
Major Cities
- Salt Lake City
- West Valley City
- West Jordan
- Provo
- Orem
- Sandy
- Ogden
- Layton
- Lehi
- South Jordan
- Millcreek
- Taylorsville
- Herriman
- Draper
- Murray
- Eagle Mountain
- Bountiful
- Riverton
- Saratoga Springs
- Spanish Fork
- Roy
- Pleasant Grove
- Midvale
- Springville
and 74 more cities
Demographics
Detailed demographic and economic data is not yet available for area code 801.
History
Area code 801 is one of the original area codes established in 1947 when the North American Numbering Plan (NANP) was created. Over time, area code area code 435 was split from 801. It shares its territory with area code area code 385.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 801).
| County | Population | Share |
|---|---|---|
| Salt Lake, UT | 1,188,010 | 44.8% |
| Utah, UT | 730,100 | 27.5% |
| Davis, UT | 402,973 | 15.2% |
| Weber, UT | 274,577 | 10.4% |
| Wasatch, UT | 43,749 | 1.6% |
| Morgan, UT | 12,585 | 0.5% |
Area Code 801 Family Tree
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Area code 801 was originally assigned in 01-Jan-1947 to serve UT. Over the years, it has generated 2 descendant area codes through a combination of geographic splits and overlays as demand for telephone numbers grew.
Call Context
This area code covers a geographic region across UT, including Salt Lake City and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 801.
Other Area Codes in Utah
Area codes that also serve Utah, linked for easy comparison.