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What county is ZIP code 78113 in?

Updated · Data: U.S. Census Bureau

ZIP code 78113 (Falls City, TX) is mostly in Wilson County (40.1% of its land), with parts in Atascosa County and Karnes County.

Which counties is ZIP 78113 in?

CountyShare of land areaChart
Wilson County40.1%
Atascosa County32.0%
Karnes County27.9%

About 3,258 people live in this ZIP code area. Because it crosses a county line, the county depends on the street: check your address.

Is ZIP 78113 a Census ZIP code area?

Yes. A ZIP Code Tabulation Area (ZCTA) is the Census version of a ZIP code; its edges can differ from USPS delivery routes (ZIP code vs ZCTA). Look up another ZIP on the ZIP code to county lookup.

Sources: Census 2020 ZCTA-county relationship file; Gazetteer 2024; GeoNames (CC BY 4.0, post office name); ACS 2019-2023 5-year. Data as of November 1, 2026. Not affiliated with USPS or any government agency.

FAQ

Frequently asked questions

What county is ZIP code 78113 in?
ZIP code 78113 (Falls City, TX) is mostly in Wilson County (40.1% of its land), with parts in Atascosa County and Karnes County.
Is ZIP 78113 in Atascosa County?
Partly: about 32.0% of its land is in Atascosa County.
What city is ZIP 78113?
The post office name is Falls City.

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