Skip to content
Find my county

What county is ZIP code 78629 in?

Updated · Data: U.S. Census Bureau

ZIP code 78629 (Gonzales, TX) is mostly in Gonzales County (98.1% of its land), with parts in DeWitt County.

Which counties is ZIP 78629 in?

CountyShare of land areaChart
Gonzales County98.1%
DeWitt County1.9%

About 12,380 people live in this ZIP code area. Because it crosses a county line, the county depends on the street: check your address.

Is ZIP 78629 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 78629 in?
ZIP code 78629 (Gonzales, TX) is mostly in Gonzales County (98.1% of its land), with parts in DeWitt County.
Is ZIP 78629 in DeWitt County?
Partly: about 1.9% of its land is in DeWitt County.
What city is ZIP 78629?
The post office name is Gonzales.

Free · No signup · Private

Find your county now

Use your location, a city or a ZIP code. The check runs on your device; your location is never sent or stored.