THE HIDALGO COUNTY LAND BRIEF
Land in the
Lower Rio Grande Valley setting.
Hidalgo County has 1,571.2 square miles of land in Texas. 5 mapped landscape regions meet across Hidalgo County: Lower Rio Grande Valley, Coastal Sand Plain, Lower Rio Grande Alluvial Floodplain, 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
Hidalgo County intersects 5 mapped regional units. The largest mapped shares are:
- Lower Rio Grande Valley60%
- Coastal Sand Plain17.6%
- Lower Rio Grande Alluvial Floodplain12.6%
- Texas-Tamaulipan Thornscrub8.7%
- Rio Grande Floodplain and Terraces1.1%
Southern Texas Plains in Hidalgo 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 Hidalgo County
The atlas lists 58 cities, towns, townships, and Census communities associated with Hidalgo County, including McAllen, Linn, Edinburg. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Hidalgo County by land and water
The Census records 11.6 square miles of water within Hidalgo County, or 0.7% of its total area. That share is close to Hidalgo County’s 0.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Hidalgo County has 378.7 times the land area of nearby Doolittle CDP (4.15 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Brooks County, Cameron County, Kenedy County, Starr County, Willacy County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

