713 Area Code: Houston, Texas

The 713 area code is the original area code of Houston and remains tightly tied to the city itself and the inner ring of surrounding communities. Houston sits on the flat coastal plain of southeastern Texas, organized around a downtown core, the Texas Medical Center (one of the largest medical complexes in the world by employment), and the surrounding petrochemical complex along the Houston Ship Channel that connects inland to Galveston Bay. The local working economy reflects energy headquarters, healthcare, aerospace (the Johnson Space Center to the southeast), and the long-running port commerce that has anchored the city since the late nineteenth century.

In records the directory has compiled for 713 numbers, other Texas cities — Abilene, Austin, Beaumont, and College Station — recur frequently. None of those are inside the 713 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Texas and addresses linked across multiple cities. The directory currently documents 646 distinct prefixes within 713 in detail, a working subset of the prefix population the code carries.

Houston's home values come in close to the US median, with median household income running below the national figure but not severely so. The city's median age sits a few years under the US reading, and population places Houston among the largest cities in the country — substantial enough to anchor a metropolitan area that pulls steadily on populations from across Texas and the broader Gulf Coast region. The 713 footprint sits at the city's core.