THE OUACHITA PARISH LAND BRIEF
Land in the
Arkansas/Ouachita River Backswamps setting.
Ouachita Parish has 610.1 square miles of land in Louisiana. 6 mapped landscape regions meet across Ouachita Parish: Arkansas/Ouachita River Backswamps, Tertiary Uplands, Pleistocene Fluvial Terraces, among others.
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
Ouachita Parish intersects 6 mapped regional units. The largest mapped shares are:
- Arkansas/Ouachita River Backswamps29.7%
- Tertiary Uplands29.3%
- Pleistocene Fluvial Terraces15.7%
- Arkansas/Ouachita River Holocene Meander Belts15.1%
- Southern Tertiary Uplands7.4%
South Central Plains in Ouachita Parish
The Piney Woods occupy irregular plains at the western edge of the southern forest belt. Pine and hardwood landscapes alternate with wider river corridors such as the Red River valley.
Read the regional source ↗Finding your parcel within Ouachita Parish
The atlas lists 10 cities, towns, townships, and Census communities associated with Ouachita Parish, including Monroe, Claiborne, Swartz. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Ouachita Parish by land and water
The Census records 21.6 square miles of water within Ouachita Parish, or 3.4% of its total area. That share is close to Ouachita Parish’s 3.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Ouachita Parish has 175.6 times the land area of nearby Brownsville CDP (3.48 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Caldwell Parish, Jackson Parish, Lincoln Parish, Morehouse Parish, Richland Parish, Union Parish within Louisiana. A tract near one of these lines should be matched to the county identifier on its own records.

