THE CLARK COUNTY LAND BRIEF
Land in the
Loess Flats and Till Plains setting.
Clark County has 504.6 square miles of land in Missouri. 2 mapped landscape regions meet across Clark County: Loess Flats and Till Plains, Upper Mississippi Alluvial Plain.
Irregular plains form a transition between northern agricultural country and more wooded uplands to the south and east. Grassland and forest historically mixed, with wider woodland belts beside streams.
Regional context: Central Irregular Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Clark County intersects 2 mapped regional units. The largest mapped shares are:
- Loess Flats and Till Plains86.2%
- Upper Mississippi Alluvial Plain13.8%
Interior River Valleys and Hills in Clark County
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.
Read the regional source ↗Finding your parcel within Clark County
The atlas lists 8 cities, towns, townships, and Census communities associated with Clark County, including St. Francisville, Kahoka, Medill. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clark County by land and water
The Census records 7.22 square miles of water within Clark County, or 1.4% of its total area. That share is close to Clark County’s 1.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clark County has 317.6 times the land area of nearby Kahoka city (1.59 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Knox County, Lewis County, Scotland County within Missouri. A tract near one of these lines should be matched to the county identifier on its own records.

