Area Code 940

Texas

Area code 940 serves Texas, primarily Denton, in the Central Time (CT) time zone. It was created from a split of area code 817.

Published: February 17, 2026Verified against NANPA and FCC records

Split Area Code

This area code exists because its parent region ran low on available numbers: the parent territory was divided geographically, this code took over one part of it, and the parent kept serving the rest. Existing customers generally keep their numbers — only the code changes for the newly drawn region.

This area code was split from area code 817 (Fort Worth).

In service since: 25-May-1997

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 1,129,299
Population Density: 18 people/sq mi
below U.S. average (U.S.: 95 people/sq mi)
Median Household Income: $73,932
near U.S. median (U.S.: $80,734)
Poverty Rate: 11.1%
below U.S. average (U.S.: 12.5%)
Unemployment Rate: 4.5%
below U.S. average (U.S.: 5.2%)
Education Attainment: Bachelor's Degree+
31.2%
below U.S. average (U.S.: 35.7%)
High School or Lower
32.3%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the income ranking and density ranking.

Time Zone

Central Time (CT)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Central Time (CT)

Prefix Utilization

Geographic Coverage

State

Major Cities

Denton
Lewisville
Wichita Falls
Flower Mound
Little Elm
Corinth
Gainesville
Mineral Wells
Lantana
Burkburnett
Vernon
Sanger
Graham
Lake Dallas
Northlake
Decatur
Aubrey
Iowa Park
Briar
Bridgeport
Childress
Krum
Bowie
Hickory Creek

and 87 more cities

Area Code 940 geographic coverage map (light mode)

Demographics

The estimated population served by area code 940 is approximately 1,129,299. The population density is 18 people per square mile, which is lower than the national average of 95. The median household income is $73,932, which is near the national median of $80,734. Approximately 31.2% of adults hold a bachelor's degree or higher, compared to the national rate of 35.7%. This rate is lower than the national average. The poverty rate stands at 11.1%, which is lower than the national rate of 12.5%.

History

Area code 940 was created from a split of area code 817. It was introduced in 1997 as part of a geographic division to provide additional numbering resources.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 940).

County	Population	Share
Denton, TX	365,833	32.4%
Wichita, TX	135,973	12.0%
Cooke, TX	101,715	9.0%
Wise, TX	96,715	8.6%
Archer, TX	65,324	5.8%
Grayson, TX	50,196	4.4%
Clay, TX	42,764	3.8%
Jack, TX	42,420	3.8%
Palo Pinto, TX	39,671	3.5%
Parker, TX	29,513	2.6%
Montague, TX	29,071	2.6%
Young, TX	18,488	1.6%
Wilbarger, TX	16,263	1.4%
Stephens, TX	13,751	1.2%
Foard, TX	13,394	1.2%
Throckmorton, TX	9,945	0.9%
Cottle, TX	9,578	0.8%
Haskell, TX	8,065	0.7%
Knox, TX	7,865	0.7%
Childress, TX	6,842	0.6%
Hall, TX	6,842	0.6%
Motley, TX	6,817	0.6%
Baylor, TX	6,176	0.5%
Hardeman, TX	3,564	0.3%
Stonewall, TX	2,514	0.2%