THE UNION PARISH LAND BRIEF
Land in the
Tertiary Uplands setting.
Union Parish has 876.9 square miles of land in Louisiana. 4 mapped landscape regions meet across Union Parish: Tertiary Uplands, Pleistocene Fluvial Terraces, Floodplains and Low Terraces, among others.
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.
Regional context: South Central Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Union Parish intersects 4 mapped regional units. The largest mapped shares are:
- Tertiary Uplands81.2%
- Pleistocene Fluvial Terraces11.5%
- Floodplains and Low Terraces6.3%
- Arkansas/Ouachita River Holocene Meander Belts0.9%
Mississippi Alluvial Plain in Union Parish
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.
Read the regional source ↗Finding your parcel within Union Parish
The atlas lists 7 cities, towns, townships, and Census communities associated with Union Parish, including Farmerville, Bernice, Marion. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Union Parish by land and water
The Census records 28.4 square miles of water within Union Parish, or 3.1% of its total area. That share is close to Union Parish’s 3.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Union Parish has 151.7 times the land area of nearby Farmerville town (5.78 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Claiborne Parish, Lincoln Parish, Morehouse Parish, Ouachita Parish within Louisiana. A tract near one of these lines should be matched to the county identifier on its own records.

