San Augustine County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 7,918. Its county seat is San Augustine.

History

San Augustine County was formed in 1837. It was supposedly named after Saint Augustine of Hippo, but more plausibly, the county was named for the town of San Augustine, which had been established five years earlier and whose name was based upon an 18th-century Spanish presidio (fortress), the Presidio de San Agustín de Ahumada, named for Agustín de Ahumada, 2nd Marquess of Amarillas.

Geography

According to the U.S. Census Bureau, the county has a total area of , of which (10%) are covered by water.

Major highways

  • 20px U.S. Highway 96
  • 20px State Highway 21
  • 20px State Highway 103
  • 20px State Highway 147

Adjacent counties

  • Shelby County (north)
  • Sabine County (east)
  • Jasper County (south)
  • Angelina County (southwest)
  • Nacogdoches County (west)

Protected areas

  • Angelina National Forest (part)
  • Sabine National Forest (part)
  • Mission Dolores State Historic Site

Demographics