THE BEXAR COUNTY LAND BRIEF
Land in the
Northern Blackland Prairie setting.
Bexar County has 1,240.4 square miles of land in Texas. 3 mapped landscape regions meet across Bexar County: Northern Blackland Prairie, Balcones Canyonlands, Southern Post Oak Savanna.
Fine-textured clay soils distinguish the Blackland Prairie landscape from surrounding Texas regions. Its historic prairie setting now includes a mixture of agricultural areas and expanding developed corridors.
Regional context: Texas Blackland Prairies ↗ · Regional mapping across the county footprint
Where the landscape changes
Bexar County intersects 3 mapped regional units. The largest mapped shares are:
- Northern Blackland Prairie67.8%
- Balcones Canyonlands24.5%
- Southern Post Oak Savanna7.7%
Edwards Plateau in Bexar County
A limestone plateau becomes more dissected toward its southern and eastern margins. Juniper-oak and mesquite-oak landscapes accompany valleys, springs and the region's distinctive underground drainage system.
Read the regional source ↗East Central Texas Plains in Bexar County
The Post Oak Savanna's irregular plains form a transition between open prairie and the Piney Woods. Post oak, grassland and locally dense clay subsoils are characteristic regional elements.
Read the regional source ↗Finding your parcel within Bexar County
The atlas lists 34 cities, towns, townships, and Census communities associated with Bexar County, including San Antonio, Schertz, St. Hedwig. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Bexar County by land and water
The Census records 15.7 square miles of water within Bexar County, or 1.2% of its total area. That share is close to Bexar County’s 1.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Bexar County has 2.5 times the land area of nearby San Antonio city (499 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Atascosa County, Bandera County, Comal County, Guadalupe County, Kendall County, Medina County, Wilson County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

