THE CENTRALIA LAND BRIEF
Land in the
Claypan Prairie setting.
Centralia city has 2.91 square miles of land in Audrain County, Boone County. Its Census reference point is in Claypan Prairie, within Central Irregular Plains.
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 ↗ · Classification at the Census reference point
One place name. 2 county geographies.
Centralia intersects 2 county geographies: Audrain County, Boone County. A Centralia mailing address alone cannot choose the right record office; use the county and parcel identifier on the tax bill or deed.
Centralia by land and water
The Census records 0 square miles of water within Centralia, or 0% of its total area. It is 1.4 percentage points lower than the 1.4% recorded for Missouri. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Centralia city has 1.8 times the land area of nearby Hallsville city (1.6 square miles). These areas describe boundaries, not comparable property prices.

