THE TERREBONNE PARISH LAND BRIEF
Land in the
Deltaic Coastal Marshes and Barrier Islands setting.
Terrebonne Parish has 1,229.9 square miles of land in Louisiana. 3 mapped landscape regions meet across Terrebonne Parish: Deltaic Coastal Marshes and Barrier Islands, Southern Holocene Meander Belts, Inland Swamps.
The Mississippi's broad alluvial plain includes river terraces, swales and natural levees. Small changes in elevation distinguish local settings within this generally flat river landscape.
Regional context: Mississippi Alluvial Plain ↗ · Regional mapping across the county footprint
Where the landscape changes
Terrebonne Parish intersects 3 mapped regional units. The largest mapped shares are:
- Deltaic Coastal Marshes and Barrier Islands82.3%
- Southern Holocene Meander Belts9.8%
- Inland Swamps7.9%
Finding your parcel within Terrebonne Parish
The atlas lists 10 cities, towns, townships, and Census communities associated with Terrebonne Parish, including Bayou Blue, Dulac, Houma. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Terrebonne Parish by land and water
The Census records 852.4 square miles of water within Terrebonne Parish, or 40.9% of its total area. That share is close to Terrebonne Parish’s 40.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Terrebonne Parish has 76.9 times the land area of nearby Dulac CDP (16 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Assumption Parish, Lafourche Parish, St. Mary Parish within Louisiana. A tract near one of these lines should be matched to the county identifier on its own records.

