North American Numbers Source-cited · ownership disclosed
Area code
435
In service
United States · since 1997

St. George / rest of Utah

Area code 435 serves most of Utah outside the Wasatch Front, including St. George, Cedar City, Logan, Moab and Park City. It split from 801 in 1997.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
St. George / rest of Utah
Type
geographic
Status
in service
In service since
1997
Projected exhaust
2076 Q1

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 435 is

Utah outside the Wasatch Front (rural, southern, eastern and northern Utah)..

Communities served wholly or partly by 435:

St. GeorgeCedar CityLoganMoabPark CityTooele

Also serves the Colorado City, Arizona school district area just across the state line.

B · Relationships

How it relates to other codes

The codes 435 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?

Split from · 1997 801 Salt Lake City 435 was split from 801 on 1997-09-21; 801 kept the Wasatch Front.
What's changing. Single code, no overlay. One of the most thinly populated NPAs; not projected to exhaust until 2041.
C · History

How 435 got here

1997-09-21
Created by a split from area code 801 to serve Utah outside the Wasatch Front.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
525
Prefixes available
275
Thousands-blocks assigned
2,101

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

Compare 435 with another code →
Sources
Wikipedia ↗
Area code 435
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.