North American Numbers Source-cited · ownership disclosed
Area code
817
In service
United States · since 1953

Fort Worth

Fort Worth and the western Dallas-Fort Worth Metroplex, anchored on Tarrant County. Created in 1953 and now overlaid by 682.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Fort Worth
Type
geographic
Status
in service
In service since
1953
Projected exhaust
2041 Q2

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 817 is

Fort Worth and the western Dallas-Fort Worth Metroplex (Tarrant County core), Texas.

Communities served wholly or partly by 817:

Fort WorthArlingtonGrapevineGrand PrairieBurlesonBedfordEuless

Representative; some east-Tarrant communities near Dallas fall inside the 214/972 footprint instead.

B · Relationships

How it relates to other codes

The codes 817 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 · 1953 915 El Paso 817 was created in 1953 chiefly from area code 915 (not from 214).
Spawned · 1997 940 Wichita Falls Northern tier became 940 (Wichita Falls/Denton) in the 1997 three-way split.
Spawned · 1997 254 Waco Southern tier became 254 (Waco/Temple/Killeen) in the same 1997 split.
Overlay · 2000 682 Fort Worth (overlay) 682 overlaid the identical 817 territory on Oct 7, 2000.
What's changing. Active overlay complex (817/682). Mandatory 10-digit dialing.
C · History

How 817 got here

1953
Created, chiefly from area code 915, for Fort Worth and the western Metroplex.
Source: Wikipedia (Area codes 817 and 682)
1997-07-25
Three-way split creating 940 (north) and 254 (south).
Source: Wikipedia (Area codes 817 and 682)
2000-10-07
Area code 682 overlay went into service.
Source: Wikipedia (Area codes 817 and 682)
D · Capacity

How full it is

Prefixes assigned
797
Prefixes available
3
Thousands-blocks assigned
2,786

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

Compare 817 with another code →
Sources
Wikipedia ↗
Area codes 817 and 682
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.