
San Carlos
- County:
- Hidalgo County
- County Seat:
- No
- Area (mi²):
- 1.808
- State:
- Texas
San Carlos is a CDP located in Hidalgo County, Texas. San Carlos has a 2025 population of 4,304. San Carlos is currently growing at a rate of 1.85% annually and its population has increased by 9.1% since the most recent census, which recorded a population of 3,945 in 2020.
The average household income in San Carlos is $57,679 with a poverty rate of 21%. The median age in San Carlos is 30.8 years: 30.9 years for males, and 30.3 years for females.