THE AUDRAIN COUNTY LAND BRIEF
Land in the
Claypan Prairie setting.
Audrain County has 692.3 square miles of land in Missouri. 2 mapped landscape regions meet across Audrain County: Claypan Prairie, River Hills.
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
Audrain County intersects 2 mapped regional units. The largest mapped shares are:
- Claypan Prairie95.4%
- River Hills4.6%
Interior River Valleys and Hills in Audrain 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 Audrain County
The atlas lists 9 cities, towns, townships, and Census communities associated with Audrain County, including Mexico, Centralia, Vandalia. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Audrain County by land and water
The Census records 4.57 square miles of water within Audrain County, or 0.7% of its total area. That share is close to Audrain County’s 0.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Audrain County has 2,218.8 times the land area of nearby Vandiver village (0.31 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Boone County, Callaway County, Monroe County, Montgomery County, Pike County, Ralls County, Randolph County within Missouri. A tract near one of these lines should be matched to the county identifier on its own records.

