
San Augustine
- County:
- San Augustine County
- County Seat:
- Yes
- Area (mi²):
- 4.717
- State:
- Texas
San Augustine is a city located in San Augustine County, Texas. San Augustine has a 2025 population of 1,833. It is also the county seat of San Augustine County. San Augustine is currently declining at a rate of -0.92% annually and its population has decreased by -4.38% since the most recent census, which recorded a population of 1,917 in 2020.
The average household income in San Augustine is $39,615 with a poverty rate of 31.26%. The median age in San Augustine is 52.1 years: 51.2 years for males, and 53.4 years for females.