THE SAN PATRICIO COUNTY LAND BRIEF
Land in the
Southern Subhumid Gulf Coastal Prairies setting.
San Patricio County has 693.3 square miles of land in Texas. 4 mapped landscape regions meet across San Patricio County: Southern Subhumid Gulf Coastal Prairies, Mid-Coast Barrier Islands and Coastal Marshes, Floodplains and Low Terraces, among others.
Low coastal plains extend along the western Gulf, contrasting with more irregular inland country. Grassland was the principal natural cover, with river corridors and coastal features adding local variation.
Regional context: Western Gulf Coastal Plain ↗ · Regional mapping across the county footprint
Where the landscape changes
San Patricio County intersects 4 mapped regional units. The largest mapped shares are:
- Southern Subhumid Gulf Coastal Prairies84.1%
- Mid-Coast Barrier Islands and Coastal Marshes9.2%
- Floodplains and Low Terraces4.3%
- Texas-Tamaulipan Thornscrub2.3%
Southern Texas Plains in San Patricio County
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.
Read the regional source ↗Finding your parcel within San Patricio County
The atlas lists 26 cities, towns, townships, and Census communities associated with San Patricio County, including Corpus Christi, Ingleside, Aransas Pass. The list includes overlapping geography types and does not divide the county into exclusive service areas.
San Patricio County by land and water
The Census records 14.5 square miles of water within San Patricio County, or 2% of its total area. That share is close to San Patricio County’s 2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, San Patricio County has 807.1 times the land area of nearby Del Sol CDP (0.86 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Aransas County, Bee County, Jim Wells County, Live Oak County, Nueces County, Refugio County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

