THE LOUISA COUNTY LAND BRIEF
Land in the
Upper Mississippi Alluvial Plain setting.
Louisa County has 401.8 square miles of land in Iowa. 2 mapped landscape regions meet across Louisa County: Upper Mississippi Alluvial Plain, Rolling Loess Prairies.
Broad terraced river valleys contrast with wooded slopes and dissected glacial plains. Bottomland settings and upland oak landscapes occur close together across the Interior River Valleys and Hills.
Regional context: Interior River Valleys and Hills ↗ · Regional mapping across the county footprint
Where the landscape changes
Louisa County intersects 2 mapped regional units. The largest mapped shares are:
- Upper Mississippi Alluvial Plain51.9%
- Rolling Loess Prairies48.1%
Western Corn Belt Plains in Louisa County
Glacial till plains and windblown loess hills make up the Western Corn Belt landscape. Near-level and rolling terrain are interspersed with steeper river valleys and hills.
Read the regional source ↗Finding your parcel within Louisa County
The atlas lists 9 cities, towns, townships, and Census communities associated with Louisa County, including Columbus Junction, Wapello, Morning Sun. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Louisa County by land and water
The Census records 15.7 square miles of water within Louisa County, or 3.8% of its total area. That share is close to Louisa County’s 3.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Louisa County has 309.3 times the land area of nearby Wapello city (1.3 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Des Moines County, Henry County, Johnson County, Muscatine County, Washington County within Iowa. A tract near one of these lines should be matched to the county identifier on its own records.

