Utah · Mountain Time
Salt Lake City, UT Area Codes
Salt Lake City is served by 2 area codes (385, 801). Here's which is original, which are overlays, and how to pick one for a new local number.
Last updated June 5, 2026
Area codes serving Salt Lake City
Salt Lake City sits in Utah, part of the West region and the Mountain Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 385, 801.
The original code is 801. As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.
How to pick an area code for a new number
When you activate a new line in Salt Lake City, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 801), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.
Dialing in Salt Lake City
Because Salt Lake City is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Utah, visit the Utah area codes page.
Quick answers
Salt Lake City area code FAQ
What area codes does Salt Lake City use?
Salt Lake City, UT is served by 2 area codes: 385, 801.
Which is the original Salt Lake City area code?
801 is the original/primary code for Salt Lake City; the others are overlays added later for more numbers.
Do I need to dial the area code in Salt Lake City?
Yes. With multiple overlapping codes, 10-digit dialing is required for every call in this area.