Utah area codes — detailed data

NANPA NPA database, current as of July 28, 2026.

Working detail for Utah's 3 area codes: history, capacity forecasts and dialing plans, straight from NANPA's NPA database.

Aggregate footprint: the state's 3 geographic codes currently carry 1,763 active NXX prefixes over 153 rate-center anchorings, with 1,187 prefixes in thousands-block pooling. 3 of the codes serve territory inside FCC top-100 metropolitan statistical areas.

Lineage: 385 came out of 801 in 2009; 435 came out of 801 in 1997. The remaining code (801) dates back to the plan's early assignments.

Dialing plans: 2 codes use plain ten-digit local dialing (10D); 1 still allows seven-digit local calls. Overlay territories always dial ten digits; the 2021 988-hotline transition moved most others to ten digits as well.

The tightest capacity in the state is 385 (complex 385/801), projected to exhaust 3Q 2035.

Status: no Utah code is currently in jeopardy or active relief planning — capacity is adequate near-term per NANPA.

Code-by-code notes

801 — spawned 435, 385; overlaid by 385; exhaust forecast 3Q 2035.

435 — carved from 801; exhaust forecast 1Q 2076.

385 — carved from 801; overlaid by 801; exhaust forecast 3Q 2035.