THE DALLAS COUNTY LAND BRIEF
Land in the
Des Moines Lobe setting.
Dallas County has 588.2 square miles of land in Iowa. 2 mapped landscape regions meet across Dallas County: Des Moines Lobe, Rolling Loess Prairies.
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.
Regional context: Western Corn Belt Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Dallas County intersects 2 mapped regional units. The largest mapped shares are:
- Des Moines Lobe80.1%
- Rolling Loess Prairies19.9%
Finding your parcel within Dallas County
The atlas lists 18 cities, towns, townships, and Census communities associated with Dallas County, including West Des Moines, Urbandale, Waukee. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Dallas County by land and water
The Census records 3.38 square miles of water within Dallas County, or 0.6% of its total area. That share is close to Dallas County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Dallas County has 108.7 times the land area of nearby Dallas Center city (5.41 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adair County, Boone County, Greene County, Guthrie County, Madison County, Polk County, Warren County within Iowa. A tract near one of these lines should be matched to the county identifier on its own records.

