THE GRUNDY COUNTY LAND BRIEF
Land in the
Eastern Iowa and Minnesota Drift Plains setting.
Grundy County has 501.9 square miles of land in Iowa. 2 mapped landscape regions meet across Grundy County: Eastern Iowa and Minnesota Drift Plains, 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
Grundy County intersects 2 mapped regional units. The largest mapped shares are:
- Eastern Iowa and Minnesota Drift Plains92.7%
- Rolling Loess Prairies7.3%
Finding your parcel within Grundy County
The atlas lists 9 cities, towns, townships, and Census communities associated with Grundy County, including Grundy Center, Reinbeck, Dike. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Grundy County by land and water
The Census records 0.04 square miles of water within Grundy County, or 0% of its total area. That share is close to Grundy County’s 0%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Grundy County has 1,991.5 times the land area of nearby Holland city (0.25 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Black Hawk County, Butler County, Franklin County, Hardin County, Marshall County, Tama County within Iowa. A tract near one of these lines should be matched to the county identifier on its own records.

