THE ALLEN COUNTY LAND BRIEF
Land in the
Osage Cuestas setting.
Allen County has 500.3 square miles of land in Kansas. 2 mapped landscape regions meet across Allen County: Osage Cuestas, Wooded Osage 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 ↗ · Regional mapping across the county footprint
Where the landscape changes
Allen County intersects 2 mapped regional units. The largest mapped shares are:
- Osage Cuestas95.5%
- Wooded Osage Plains4.5%
Finding your parcel within Allen County
The atlas lists 19 cities, towns, townships, and Census communities associated with Allen County, including Elsmore, Marmaton, Osage. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Allen County by land and water
The Census records 5.03 square miles of water within Allen County, or 1% of its total area. That share is close to Allen County’s 1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Allen County has 627.7 times the land area of nearby La Harpe city (0.8 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Anderson County, Bourbon County, Coffey County, Linn County, Neosho County, Wilson County, Woodson County within Kansas. A tract near one of these lines should be matched to the county identifier on its own records.

