THE WILLACY COUNTY LAND BRIEF
Land in the
Lower Rio Grande Valley setting.
Willacy County has 590.6 square miles of land in Texas. 3 mapped landscape regions meet across Willacy County: Lower Rio Grande Valley, Coastal Sand Plain, Laguna Madre Barrier Islands and Coastal Marshes.
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
Willacy County intersects 3 mapped regional units. The largest mapped shares are:
- Lower Rio Grande Valley75.4%
- Coastal Sand Plain15.6%
- Laguna Madre Barrier Islands and Coastal Marshes9%
Finding your parcel within Willacy County
The atlas lists 10 cities, towns, townships, and Census communities associated with Willacy County, including Port Mansfield, Raymondville, Lyford. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Willacy County by land and water
The Census records 194.2 square miles of water within Willacy County, or 24.7% of its total area. That share is close to Willacy County’s 24.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Willacy County has 1,138 times the land area of nearby San Perlita city (0.52 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cameron County, Hidalgo County, Kenedy County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.