THE SAN AUGUSTINE COUNTY LAND BRIEF
Land in the
Southern Tertiary Uplands setting.
San Augustine County has 530.7 square miles of land in Texas. 2 mapped landscape regions meet across San Augustine County: Southern Tertiary Uplands, Tertiary Uplands.
The Piney Woods occupy irregular plains at the western edge of the southern forest belt. Pine and hardwood landscapes alternate with wider river corridors such as the Red River valley.
Regional context: South Central Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
San Augustine County intersects 2 mapped regional units. The largest mapped shares are:
- Southern Tertiary Uplands66.1%
- Tertiary Uplands33.9%
Finding your parcel within San Augustine County
The atlas lists 2 cities, towns, townships, and Census communities associated with San Augustine County, including San Augustine, Broaddus. The list includes overlapping geography types and does not divide the county into exclusive service areas.
San Augustine County by land and water
The Census records 61.6 square miles of water within San Augustine County, or 10.4% of its total area. That share is close to San Augustine County’s 10.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, San Augustine County has 1,422.7 times the land area of nearby Broaddus town (0.37 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Angelina County, Jasper County, Nacogdoches County, Sabine County, Shelby County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

