
San Isidro
- County:
- Starr County
- County Seat:
- No
- Area (mi²):
- 3.103
- State:
- Texas
San Isidro is a CDP located in Starr County, Texas. San Isidro has a 2025 population of 259. San Isidro is currently growing at a rate of 0.39% annually and its population has increased by 151.46% since the most recent census, which recorded a population of 103 in 2020.
The average household income in San Isidro is $51,753 with a poverty rate of 13.64%. The median age in San Isidro is 45 years: 43.1 years for males, and 47.6 years for females.