North American Numbers Source-cited · ownership disclosed
Area code
940
In service
United States · since 1997

Wichita Falls

A single area code for north-central and northwest Texas (Wichita Falls, Denton, Gainesville). Split from 817 in 1997.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Wichita Falls
Type
geographic
Status
in service
In service since
1997
Projected exhaust
2049 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 940 is

North-central and northwest Texas: the Wichita Falls and Denton areas.

Communities served wholly or partly by 940:

Wichita FallsDentonGainesvilleDecaturGrahamMineral WellsVernon

Representative; covers 22 counties from Wichita County east to Grayson County.

B · Relationships

How it relates to other codes

The codes 940 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 817 Fort Worth 940 split from 817 in the 1997 three-way split (in service July 25, 1997).
Related · 1997 254 Waco 254 was created in the same 1997 split of 817.
What's changing. Single, non-overlaid area code. Mandatory 10-digit dialing since Oct 24, 2021 (988-driven).
C · History

How 940 got here

1997-07-25
Went into service in a split from 817, serving Wichita Falls and Denton.
Source: Wikipedia (Area code 940)
2021-10-24
Transitioned to mandatory 10-digit dialing (988 rollout).
Source: Wikipedia (Area code 940)
D · Capacity

How full it is

Prefixes assigned
522
Prefixes available
278
Thousands-blocks assigned
2,168

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

Compare 940 with another code →
Sources
Wikipedia ↗
Area code 940
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.