North American Numbers Source-cited · ownership disclosed
Area code
580
In service
United States · since 1997

Lawton / western & southern Oklahoma

Created in 1997 by splitting the western and southern portions off from 405. It became one of the most thinly populated area codes in the nation.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Lawton / western & southern Oklahoma
Type
geographic
Status
in service
In service since
1997
Projected exhaust
2029 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 580 is

Western and southern Oklahoma — a large rural region wrapping the OKC metro, bordering Texas, Kansas, New Mexico and the Oklahoma Panhandle..

Communities served wholly or partly by 580:

LawtonEnidArdmoreAdaAltusDurantPonca CityGuymonWoodwardWeatherford
B · Relationships

How it relates to other codes

The codes 580 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 405 Oklahoma City Split from 405 on November 1, 1997.
What's changing. No overlay; single-code area. Not projected to need relief before ~2029.
C · History

How 580 got here

1997-11-01
Established by splitting western and southern Oklahoma from area code 405.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
762
Prefixes available
38
Thousands-blocks assigned
2,552

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

Compare 580 with another code →
Sources
Wikipedia ↗
Area code 580
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.