Gonzales County, Texas ZIP codes
10 ZIP codes are in Gonzales County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 10
- Population in these ZIPs
- 19,977
- Avg. median income
- $57,300population-weighted
- Cities & towns
- 10
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ZIP codes in Gonzales County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 78122 | Leesville | 338 | — | — |
| 78140 | Nixon | 3,474 | $50,250 | $199,800 |
| 78159 | Smiley | 623 | $35,083 | $239,200 |
| 78604 PO Box | Belmont | — | — | — |
| 78614 | Cost | 262 | — | — |
| 78629 | Gonzales | 12,740 | $59,521 | $243,300 |
| 78632 | Harwood | 1,245 | $62,500 | $417,200 |
| 78658 | Ottine | 94 | — | $434,600 |
| 78677 | Wrightsboro | 44 | — | — |
| 78959 | Waelder | 1,157 | $60,472 | $294,500 |
ZIP codes partly in Gonzales County
These ZIP codes are mostly in a neighboring county but cover part of Gonzales County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 77954 | Cuero | DeWitt County | 11,424 | $66,195 | $214,400 |
| 77984 | Shiner | Lavaca County | 4,800 | $92,656 | $306,900 |
| 77994 | Westhoff | DeWitt County | 424 | $87,589 | — |
| 78638 | Kingsbury | Guadalupe County | 2,135 | $69,250 | $368,000 |
| 78648 | Luling | Caldwell County | 7,863 | $57,621 | $225,500 |
| 78941 | Flatonia | Fayette County | 3,619 | $76,477 | $430,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Gonzales County
Nearby counties
Frequently asked questions
How many ZIP codes are in Gonzales County, Texas?
10 ZIP codes are mainly in Gonzales County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Gonzales County?
ZIP codes in Gonzales County use the city names Belmont, Cost, Gonzales, Harwood, Leesville, Nixon, Ottine, Smiley, Waelder and Wrightsboro.