THE OLMSTED COUNTY LAND BRIEF
Land in the
Rochester/Paleozoic Plateau Upland setting.
Olmsted County has 653.5 square miles of land in Minnesota. 3 mapped landscape regions meet across Olmsted County: Rochester/Paleozoic Plateau Upland, Blufflands and Coulees, 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
Olmsted County intersects 3 mapped regional units. The largest mapped shares are:
- Rochester/Paleozoic Plateau Upland85.6%
- Blufflands and Coulees12.8%
- Eastern Iowa and Minnesota Drift Plains1.6%
Western Corn Belt Plains in Olmsted 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 Olmsted County
The atlas lists 28 cities, towns, townships, and Census communities associated with Olmsted County, including Rochester, High Forest, Rock Dell. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Olmsted County by land and water
The Census records 1.25 square miles of water within Olmsted County, or 0.2% of its total area. That share is close to Olmsted County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Olmsted County has 22.5 times the land area of nearby Marion township (29.1 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Dodge County, Fillmore County, Goodhue County, Mower County, Wabasha County, Winona County within Minnesota. A tract near one of these lines should be matched to the county identifier on its own records.

