San Augustine is a city located in San Augustine County Texas. It is also the county seat of San Augustine County. With a 2020 population of 1,864, it is the 630th largest city in Texas and the 7882nd largest city in the United States . San Augustine is currently declining at a rate of -0.64% annually and its population has decreased by -11.57% since the most recent census, which recorded a population of 2,108 in 2010. San Augustine reached it's highest population of in . Spanning over 5 miles, San Augustine has a population density of 395 people per square mile.
The average household income in San Augustine is $48,686 with a poverty rate of 27.40%. The median rental costs in recent years comes to $542 per month, and the median house value is $89,100. The median age in San Augustine is 47.2 years, 47 years for males, and 47.3 years for females.