Where Is Area Code 346?
Area code 346 serves Alvin and the greater Houston area in southeastern Texas. The region is part of the South Central United States and includes the upper Gulf Coast. Alvin is in Brazoria County, south of Houston.
The coverage reaches parts of Harris, Brazoria, Fort Bend, Galveston, and Chambers counties. Major communities include Houston, Baytown, Friendswood, League City, Missouri City, Pasadena, Pearland, Sugar Land, and Katy.
The area includes Houston’s downtown district, Port Houston, the Houston Ship Channel, and NASA’s Johnson Space Center near Clear Lake. Alvin sits on the coastal plain near the southern edge of the Houston metropolitan area.
Cities and Communities in the 346 Area Code
- Alvin, Brazoria County
- Baytown, Harris and Chambers counties
- Friendswood, Harris and Galveston counties
- Houston, Harris County
- Katy, Harris, Fort Bend, and Waller counties
- League City, Galveston County
- Missouri City, Fort Bend and Harris counties
- Pasadena, Harris County
- Pearland, Brazoria and Harris counties
- Sugar Land, Fort Bend County
History of Area Code 346
Area code 346 entered service on July 1, 2014. It was added as a geographic overlay to area codes 713, 281, and 832, so it did not divide the region into separate geographic sections.
Area code 713 was one of the original North American Numbering Plan area codes assigned in 1947. Houston’s growing demand for telephone numbers later led to the 281 split and the 832 overlay before area code 346 was added. The overlay system allows several area codes to serve the same location and requires ten-digit dialing for local calls.
Key Facts About Area Code 346
- Area code 346 is a geographic area code in Texas.
- Alvin, in Brazoria County, is the primary city identified for area code 346.
- Houston is the major city and metropolitan center associated with area code 346.
- Area code 346 is an overlay, not an original area code or a geographic split.
- Area code 346 entered service on July 1, 2014.
- Area code 346 overlaps area codes 713, 281, and 832 in the Houston region.
- Area code 346 is in the South Central United States Census region and uses Central Time.
- The service area includes NASA’s Johnson Space Center and Port Houston.
Frequently Asked Questions
What state is area code 346 in?
Area code 346 is in Texas.
What major cities use area code 346?
Major cities and communities using area code 346 include Alvin, Houston, Baytown, Friendswood, League City, Missouri City, Pasadena, Pearland, Sugar Land, and Katy.
What time zone is area code 346 in?
Area code 346, including Alvin, uses the Central Time Zone.
Is area code 346 a toll-free number?
No. Area code 346 is a geographic area code assigned to the Houston area, not a toll-free code.