
South Alamo
- County:
- Hidalgo County
- County Seat:
- No
- Area (mi²):
- 2.037
- State:
- Texas
South Alamo is a CDP located in Hidalgo County, Texas. South Alamo has a 2025 population of 3,451. South Alamo is currently growing at a rate of 0.17% annually and its population has increased by 36.3% since the most recent census, which recorded a population of 2,532 in 2020.
The average household income in South Alamo is $63,671 with a poverty rate of 30.35%. The median age in South Alamo is 34.6 years: 34.5 years for males, and 34.7 years for females.