The area code 713 is located in Houston, Texas.
Area code 713 is the historic Houston area code in southeast Texas. It serves the city of Houston and the surrounding metro, anchoring Harris County on the Gulf Coast plain. First assigned in 1947 as one of the original North American Numbering Plan codes, 713 signals a call tied to Greater Houston. It remains a recognizable badge for local phone numbers and a point of pride across the region.
Within the Houston area, 713 numbers appear across major communities, including:
These cities sit in and around Harris County on the Gulf Coast plain. Landmarks often reached with 713 phone numbers include Downtown Houston, the Texas Medical Center, the Museum District, and NRG Park.
Area code 713 has changed as the region grew. In 1983, it was split to create 409; in 1996, a further split created 281. Overlays followed: 832 in 1999 and 346 in 2014, and all four now cover the same Houston metropolitan area. Because of these overlays, ten-digit dialing has been required across Greater Houston since 1999.
Introduced: 1947; Split: 281 (1996); Overlays: 832 (1999), 346 (2014); Dialing: 10 digits since 1999. — Sources: North American Numbering Plan Administration (NANPA) and Public Utility Commission of Texas (PUCT)
For anyone seeing a Houston phone number, 713 is still the most recognized local code. Since 713, 281, 832, and 346 share the same footprint, new numbers can be any of these codes—even in the city center. Locals sometimes mark July 13 as “713 Day,” a nod to the code’s long history in Houston. The code is used for both landline and wireless phone numbers throughout the metro.