The 346 area code is in Southeastern Texas and mostly covers the Greater Houston metropolitan area. It’s a very diverse region in terms of people and economy and is part of a vast urban sprawl.
Major cities and areas covered by the 346 area code include:
- Houston (partially)
- Sugar Land
- Katy
- Spring
- Cypress
- Tomball
- Pearland (partially)
The 346 code spans several counties, including:
- Harris County (the most populous county in Texas)
- Fort Bend County
- Montgomery County
- Waller County
- Brazoria County (partially)
This area code serves more than 7 million people, covering one of the most densely populated areas of the state of Texas. The Greater Houston area is a strong example of cultural diversity, with significant Hispanic, African American, and Asian communities contributing to its rich character.
The 346 area code borders several other codes:
- 713 and 281 (which also serve Houston)
- 936 (to the north)
- 409 (to the east)
- 979 (to the west)
The code was introduced in 2014 as part of an “overlay” for the existing 713 and 281 codes to accommodate the area’s expanding population and make room for new phone numbers.
Interesting facts about the 346 area code region:
- Houston is home to NASA's Johnson Space Center, earning it the nickname "Space City."
- The area boasts a strong economy, with thriving energy, healthcare, and technology sectors.
- Houston’s port is markedly the largest in the US. Indeed, Houston is the Gulf of Mexico’s top economic engine.
- The Greater Houston area is home to the world’s widest freeway—the Katy Freeway (Interstate 10).
The 346 area code reflects metropolitan development, industry, and a wide variety of cultural amenities emerging in an ever-expanding part of Texas.







