THE ASSUMPTION PARISH LAND BRIEF
Land in the
Inland Swamps setting.
Assumption Parish has 344 square miles of land in Louisiana. 2 mapped landscape regions meet across Assumption Parish: Inland Swamps, Southern Holocene Meander Belts.
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
Assumption Parish intersects 2 mapped regional units. The largest mapped shares are:
- Inland Swamps69.8%
- Southern Holocene Meander Belts30.2%
Finding your parcel within Assumption Parish
The atlas lists 8 cities, towns, townships, and Census communities associated with Assumption Parish, including Belle Rose, Labadieville, Supreme. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Assumption Parish by land and water
The Census records 25.9 square miles of water within Assumption Parish, or 7% of its total area. That share is close to Assumption Parish’s 7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Assumption Parish has 2,047.7 times the land area of nearby Napoleonville village (0.17 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Ascension Parish, Iberia Parish, Iberville Parish, Lafourche Parish, St. James Parish, St. Martin Parish, St. Mary Parish, Terrebonne Parish within Louisiana. A tract near one of these lines should be matched to the county identifier on its own records.

