THE DIMMIT COUNTY LAND BRIEF
Land in the
Texas-Tamaulipan Thornscrub setting.
Dimmit County has 1,328.9 square miles of land in Texas. 2 mapped landscape regions meet across Dimmit County: Texas-Tamaulipan Thornscrub, Northern Nueces Alluvial Plains.
Rolling to dissected plains support the thorny brush landscape associated with South Texas. Mesquite and other shrubs are prominent within this warm transition between grassland and desert regions.
Regional context: Southern Texas Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Dimmit County intersects 2 mapped regional units. The largest mapped shares are:
- Texas-Tamaulipan Thornscrub92.2%
- Northern Nueces Alluvial Plains7.8%
Finding your parcel within Dimmit County
The atlas lists 6 cities, towns, townships, and Census communities associated with Dimmit County, including Catarina, Carrizo Springs, Asherton. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Dimmit County by land and water
The Census records 5.63 square miles of water within Dimmit County, or 0.4% of its total area. That share is close to Dimmit County’s 0.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Dimmit County has 1,626.5 times the land area of nearby Asherton city (0.82 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Frio County, La Salle County, Maverick County, Webb County, Zavala County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

