THE DAUPHIN ISLAND LAND BRIEF
Land in the
Gulf Barrier Islands and Coastal Marshes setting.
Dauphin Island town has 6.26 square miles of land in Mobile County. Its Census reference point is in Gulf Barrier Islands and Coastal Marshes, within Southern Coastal Plain.
Low plains mingle with barrier islands, lagoons, marshes and inland lake districts. Coastal and inland settings vary substantially within this warm southeastern landscape.
Regional context: Southern Coastal Plain ↗ · Classification at the Census reference point
Dauphin Island and Mobile County
Dauphin Island is associated with Mobile 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.
Dauphin Island by land and water
The Census records 159.7 square miles of water within Dauphin Island, or 96.2% of its total area. It is 71 percentage points higher than the 25.2% recorded for Mobile County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Dauphin Island town has 83.4% of the land area of nearby Bayou La Batre city (7.5 square miles). These areas describe boundaries, not comparable property prices.

