Texas · Central Time
713 Area Code
Area code 713 is in Texas, serving greater Houston, including Harris County and surrounding suburbs in southeast Texas. It is in the Central Time zone. It shares its territory with overlay codes 281, 346, 621 and 832, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 713 area code?
713 is a Texas area code covering greater Houston, including Harris County and surrounding suburbs in southeast Texas. In the wider directory it sits in the South region.
Cities in the 713 area code
- Houston
- Pasadena
- Pearland
- Sugar Land
- League City
- Baytown
- Missouri City
- Katy
- Humble
- Friendswood
- Tomball
- Stafford
- Bellaire
Counties served by 713
Harris County, Fort Bend County, Montgomery County, Brazoria County, Galveston County and Waller County.
Time zone note: Almost all of Texas is Central; far-west El Paso is Mountain.
713 overlay codes and dialing
The 713 territory is covered by an overlay of 5 area codes: 281, 346, 621, 713, 832. All of them serve the same geographic area, and the original code is 713. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 713 area code
713 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the Houston area ever since, with 281, 346, 621 and 832 later added as overlays to supply more numbers.
Is 713 a scam or spam risk?
713 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 713 number on your screen is no guarantee the caller is in Houston, 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 7XX 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
713 area code FAQ
Where is the 713 area code?
The 713 area code is in Texas, covering greater Houston, including Harris County and surrounding suburbs in southeast Texas, in the South region.
What cities are in the 713 area code?
Cities in the 713 area code include Houston, Pasadena, Pearland, Sugar Land, League City, Baytown, Missouri City, Katy, Humble and Friendswood.
What time zone is 713 in?
713 is in the Central Time zone. Almost all of Texas is Central; far-west El Paso is Mountain.
What is the overlay for the 713 area code?
713 shares its territory with 281, 346, 621 and 832. All 5 codes (281, 346, 621, 713, 832) serve the same area, so 10-digit dialing is required for every call.
When did the 713 area code start?
713 went into service on January 1, 1947 as one of the original 1947 North American area codes.
Do I have to dial 10 digits for 713?
Yes. Because 713 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 713 a toll-free or premium code?
No. 713 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.