Texas · Central Time
940 Area Code
Area code 940 is in Texas, serving north Texas outside the Metroplex core, including Denton and Wichita Falls. It is in the Central Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 940 area code?
940 is a Texas area code covering north Texas outside the Metroplex core, including Denton and Wichita Falls. In the wider directory it sits in the South region.
Cities in the 940 area code
- Denton
- Wichita Falls
- Gainesville
- Decatur
- Burkburnett
- Vernon
- Graham
- Sanger
- Bowie
- Iowa Park
- Krum
- Jacksboro
Counties served by 940
Denton County, Wichita County, Cooke County, Wise County, Wilbarger County, Young County, Montague County, Clay County, Archer County and Jack County.
Time zone note: Almost all of Texas is Central; far-west El Paso is Mountain.
Dialing 940
Denton, TX is currently served by the single area code 940, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 940 followed by the seven-digit number.
History of the 940 area code
940 went into service on May 25, 1997, created when it was split from 817. It serves Denton and the surrounding part of Texas. For how codes are created, split, and overlaid, see how area codes work.
Is 940 a scam or spam risk?
940 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 940 number on your screen is no guarantee the caller is in Denton, TX or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Texas area codes
Explore more
See every code in Texas, compare codes across the South region, or view all Central Time codes. You can also browse the 9XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
940 area code FAQ
Where is the 940 area code?
The 940 area code is in Texas, covering north Texas outside the Metroplex core, including Denton and Wichita Falls, in the South region.
What cities are in the 940 area code?
Cities in the 940 area code include Denton, Wichita Falls, Gainesville, Decatur, Burkburnett, Vernon, Graham, Sanger, Bowie and Iowa Park.
What time zone is 940 in?
940 is in the Central Time zone. Almost all of Texas is Central; far-west El Paso is Mountain.
When did the 940 area code start?
940 went into service on May 25, 1997.
Do I have to dial 10 digits for 940?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 940 a toll-free or premium code?
No. 940 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.