North American Numbers Source-cited · ownership disclosed
Area code
409
In service
United States · since 1982

Beaumont

A single area code for Southeast Texas / the upper Gulf Coast (Beaumont, Galveston, Port Arthur). Split from Houston's 713 in 1983.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Beaumont
Type
geographic
Status
in service
In service since
1982
Projected exhaust
2051 Q4

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 409 is

Southeast Texas / upper Gulf Coast: Beaumont, Galveston and the Golden Triangle.

Communities served wholly or partly by 409:

BeaumontGalvestonPort ArthurTexas CityOrangeJasper

Representative; covers about 11 Texas counties.

B · Relationships

How it relates to other codes

The codes 409 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 · 1983 713 Houston 409 was created Mar 19, 1983 in a split from 713.
Spawned · 2000 936 Conroe 936 (central/Deep East Texas) split off from 409 in 2000.
Spawned · 2000 979 College Station 979 (Brazos Valley/Brazoria) split off from 409 in 2000.
What's changing. Single, non-overlaid area code. Mandatory 10-digit dialing since Oct 24, 2021 (988-driven).
C · History

How 409 got here

1983-03-19
Created by a split from 713, serving Beaumont/Galveston/Port Arthur.
Source: Wikipedia (Area code 409)
2000-02
409 divided: 936 (central) and 979 (western) split off; 409 retained the eastern Beaumont/Galveston segment.
Source: Wikipedia (Area code 409)
2021-10-24
Transitioned to mandatory 10-digit dialing (988 rollout).
Source: Wikipedia (Area code 409)
D · Capacity

How full it is

Prefixes assigned
450
Prefixes available
350
Thousands-blocks assigned
2,282

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

Compare 409 with another code →
Sources
Wikipedia ↗
Area code 409
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.