Denton, Texas
Area code 940
Where Is Area Code 940?
Area code 940 is in north and northwest Texas. It serves a large region that stretches from the Dallas-Fort Worth edge into rural parts of North Texas. Denton is one of the best-known cities in the area code.
Area code 940 covers cities and communities such as Denton, Wichita Falls, Sherman, Gainesville, Decatur, Bowie, and Vernon. It serves parts of several counties in North Texas, including Denton County, Wichita County, Grayson County, and Cooke County. The coverage area includes both fast-growing suburban areas and smaller rural towns.
Area code 940 also includes notable features in North Texas. The Red River forms part of the northern boundary of the region along the Oklahoma state line. Major institutions in the area include the University of North Texas and Texas Woman's University in Denton, and Sheppard Air Force Base in Wichita Falls.
History of Area Code 940
Area code 940 was created on May 25, 1997. It was split from area code 817 as telephone demand grew in North Texas. The split helped serve both expanding cities and wide rural service areas more efficiently.
Area code 940 later received an overlay. Area code 430 was added as an overlay to the 940 region on February 15, 2003. Because of that overlay, the 940 area is part of a two-code region in which both area codes serve the same geographic area.
Key Facts About Area Code 940
- Area code 940 is a Texas area code, and Denton is one of its major cities.
- Area code 940 is in the Central Time Zone.
- Area code 940 was created on May 25, 1997, in a split from area code 817.
- Area code 430 overlays area code 940, and the overlay began on February 15, 2003.
- Area code 940 serves parts of North Texas, including Denton, Wichita Falls, Sherman, Gainesville, Decatur, Bowie, and Vernon.
- The University of North Texas and Texas Woman's University are located in Denton within the 940 area code.
- Sheppard Air Force Base in Wichita Falls is located in the 940 area code.
- The region includes communities near the Red River, which marks part of the Texas-Oklahoma border.
Frequently Asked Questions
What state is area code 940 in?
Area code 940 is in Texas.
What major cities use area code 940?
Major cities in area code 940 include Denton, Wichita Falls, Sherman, Gainesville, Decatur, Bowie, and Vernon.
Is area code 940 a toll-free number?
No. Area code 940 is a geographic area code.
Last updated: April 2026