
Castroville
- County:
- Medina County
- County Seat:
- No
- Area (mi²):
- 3.5
- State:
- Texas
Castroville is a city located in Medina County, Texas. Castroville has a 2025 population of 3,261. Castroville is currently growing at a rate of 1.87% annually and its population has increased by 10.17% since the most recent census, which recorded a population of 2,960 in 2020.
The average household income in Castroville is $93,374 with a poverty rate of 9.26%. The median age in Castroville is 44.7 years: 39.9 years for males, and 45.7 years for females.