Castroville, TX ZIP code
The ZIP code for Castroville, Texas is 78009. It is in Medina County.
- Population in these ZIPs
- 9,151
- Avg. median income
- $103,100population-weighted
- Typical home value
- $458,100population-weighted
- Metro area
- San Antonio-New Braunfels, TX
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Castroville, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 78009 | 9,151 | $103,125 | $458,100 |
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 near Castroville
Frequently asked questions
What is the ZIP code for Castroville, TX?
The ZIP code for Castroville, TX is 78009.
What county is Castroville, Texas in?
Castroville ZIP codes are in Medina County.