THE CAMERON COUNTY LAND BRIEF
Land in the
Lower Rio Grande Alluvial Floodplain setting.
Cameron County has 891.7 square miles of land in Texas. 3 mapped landscape regions meet across Cameron County: Lower Rio Grande Alluvial Floodplain, Lower Rio Grande Valley, 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
Cameron County intersects 3 mapped regional units. The largest mapped shares are:
- Lower Rio Grande Alluvial Floodplain51.8%
- Lower Rio Grande Valley25.5%
- Laguna Madre Barrier Islands and Coastal Marshes22.8%
Finding your parcel within Cameron County
The atlas lists 53 cities, towns, townships, and Census communities associated with Cameron County, including Brownsville, Harlingen, Port Isabel. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Cameron County by land and water
The Census records 388 square miles of water within Cameron County, or 30.3% of its total area. That share is close to Cameron County’s 30.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Cameron County has 185.8 times the land area of nearby Laureles CDP (4.8 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Hidalgo County, Willacy County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.