Area Code 346 — Houston, Texas

346 Area Code – Houston, Texas: Location, Time Zone & History

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About Area Code 346

Region Code
346
City
Houston
State
Texas
Population
7,122,240
Largest City
Houston
Neighboring Codes
  • 936 (Lufkin, Texas)
  • 979 (Bryan, Texas)
  • 409 (Beaumont, Texas)
Time Zone
Central Time

Map of Area Code 346

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History & Cultural Notes

Houston's telephone numbering has grown in layers rather than splits. The original 713 code was joined over time by 281 and 832, and on July 1, 2014, a fourth overlay, 346, went into service after approval by the Public Utility Commission of Texas the previous year. A fifth overlay, 621, followed on January 23, 2025, meaning callers across the metro area now share a single five-code complex rather than distinct territories.

That complex spans the Houston-The Woodlands-Sugar Land metropolitan statistical area, home to 7,122,240 people as of the 2020 U.S. Census. Communities served include Sugar Land, The Woodlands, Baytown, Pasadena, and Pearland in addition to Houston itself. The city is perhaps best known as home to NASA's Johnson Space Center, the hub of U.S. human spaceflight operations, a distinction that anchors the region's identity well beyond its numbering history.

The metro's economic base is broad and industrial, including:

  • Energy and oil & gas
  • Petrochemical manufacturing
  • Aerospace
  • Healthcare and medical research
  • Port and shipping logistics