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ZIP codes in Bexar County

103 ZIPs touch Bexar County, Texas. The blue dashed line is the county border; orange ZIPs reach into it.

103

ZIP codes

16

cross the county line

2,227,413

people in these ZIPs

254

counties in TX

Most people

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Bexar County ZIP list

More counties in Texas

All 254 counties in Texas

Questions people actually ask

How many ZIP codes are in Bexar County, Texas?

103 ZIP codes reach into Bexar County, including 25 PO Box or single-address ZIPs placed by the town they serve. 16 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Bexar County has the most people?

78245 (San Antonio) has about 96,015 residents, the most of any ZIP touching Bexar County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Bexar County and another county?

Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Bexar County. For one address, pin the exact spot on the ZIP finder to see its county.

Where does this list come from?

ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.

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Updated 2026-11-10 · Where the data comes from