THE CLAYTON COUNTY LAND BRIEF
Land in the
Blufflands and Coulees setting.
Clayton County has 778.5 square miles of land in Iowa. 3 mapped landscape regions meet across Clayton County: Blufflands and Coulees, Rochester/Paleozoic Plateau Upland, Eastern Iowa and Minnesota Drift Plains.
Deeply cut valleys divide a bedrock plateau with windblown soil on many uplands. Glaciers had less influence here than in neighboring regions, leaving a distinctly hilly landscape.
Regional context: Driftless Area ↗ · Regional mapping across the county footprint
Where the landscape changes
Clayton County intersects 3 mapped regional units. The largest mapped shares are:
- Blufflands and Coulees73%
- Rochester/Paleozoic Plateau Upland22.9%
- Eastern Iowa and Minnesota Drift Plains4.1%
Western Corn Belt Plains in Clayton County
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.
Read the regional source ↗Finding your parcel within Clayton County
The atlas lists 18 cities, towns, townships, and Census communities associated with Clayton County, including Guttenberg, Postville, Strawberry Point. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clayton County by land and water
The Census records 14.2 square miles of water within Clayton County, or 1.8% of its total area. That share is close to Clayton County’s 1.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clayton County has 569.5 times the land area of nearby Elkader city (1.37 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Allamakee County, Buchanan County, Delaware County, Dubuque County, Fayette County, Winneshiek County within Iowa. A tract near one of these lines should be matched to the county identifier on its own records.

