THE PORT MANSFIELD LAND BRIEF
Land in the
Laguna Madre Barrier Islands and Coastal Marshes setting.
Port Mansfield CDP has 4.94 square miles of land in Willacy County. Its Census boundary intersects Laguna Madre Barrier Islands and Coastal Marshes, within Western Gulf Coastal Plain.
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 ↗ · Classification from the Census boundary intersection
The Census reference point falls outside the regional layer’s mapped footprint. This classification uses the actual place-boundary intersection, with Laguna Madre Barrier Islands and Coastal Marshes representing its largest mapped overlap. Shorelines and dataset boundaries can differ.
Port Mansfield and Willacy County
Port Mansfield is associated with Willacy County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Port Mansfield by land and water
The Census records 1.43 square miles of water within Port Mansfield, or 22.5% of its total area. It is 2.3 percentage points lower than the 24.7% recorded for Willacy County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Port Mansfield CDP has 9.5 times the land area of nearby San Perlita city (0.52 square miles). These areas describe boundaries, not comparable property prices.

