THE GUADALUPE COUNTY LAND BRIEF
Land in the
Northern Blackland Prairie setting.
Guadalupe County has 711.3 square miles of land in Texas. 2 mapped landscape regions meet across Guadalupe County: Northern Blackland Prairie, 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
Guadalupe County intersects 2 mapped regional units. The largest mapped shares are:
- Northern Blackland Prairie53%
- Southern Post Oak Savanna47%
East Central Texas Plains in Guadalupe 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 Guadalupe County
The atlas lists 18 cities, towns, townships, and Census communities associated with Guadalupe County, including New Braunfels, San Marcos, Seguin. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Guadalupe County by land and water
The Census records 3.54 square miles of water within Guadalupe County, or 0.5% of its total area. That share is close to Guadalupe County’s 0.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Guadalupe County has 17.8 times the land area of nearby Seguin city (40 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Bexar County, Caldwell County, Comal County, Gonzales County, Hays County, Wilson County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

