What county is San Antonio, TX in?

San Antonio, Texas is in Bexar County. San Antonio mailing addresses (ZIP codes named San Antonio) also reach Atascosa County and Comal County and Medina County and Wilson County, so check your street.

San Antonio at a glance

How close is San Antonio to a county line?

The center of San Antonio (its Census internal point) is about 15 mi from the Guadalupe County line. Homes near the edge of town can be much closer; if you live near a line, check your address and the lookup will tell you how far you are from it.

What ZIP codes are in San Antonio?

85 ZIP codes use the name San Antonio or are centered in it. Shares are of each ZIP's land; a ZIP named after a town can reach beyond its city limits.

About Bexar County

County seat: not listed. FIPS code 48029. Population 2,037,344. All Bexar County facts.

Towns near San Antonio

• Balcones Heights: 2.4 mi away, Bexar County
• Olmos Park: 2.4 mi away, Bexar County
• Alamo Heights: 3.7 mi away, Bexar County
• Castle Hills: 4.3 mi away, Bexar County
• Terrell Hills: 4.8 mi away, Bexar County
• Leon Valley: 5.8 mi away, Bexar County

San Antonio has about 1,458,954 people. It is an incorporated city or town.

Sources: ACS 2019-2023 5-year (residents by county, table B01003); Census TIGER/Line 2024 and Gazetteer 2024 (land, location); Census 2020 ZCTA file and GeoNames (ZIP codes). Data as of November 1, 2026. Not affiliated with any government agency.