THE GREEN COUNTY LAND BRIEF
Land in the
Rock River Drift Plain setting.
Green County has 584 square miles of land in Wisconsin. 2 mapped landscape regions meet across Green County: Rock River Drift Plain, Savanna Section.
Glacial till plains support a transition between hardwood forest, oak savanna and prairie landscapes. Rolling farmland and woodland reflect this meeting of ecological regions in southeastern Wisconsin.
Regional context: Southeastern Wisconsin Till Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Green County intersects 2 mapped regional units. The largest mapped shares are:
- Rock River Drift Plain59.5%
- Savanna Section40.4%
Driftless Area in Green County
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.
Read the regional source ↗Finding your parcel within Green County
The atlas lists 25 cities, towns, townships, and Census communities associated with Green County, including Spring Grove, Jefferson, Clarno. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Green County by land and water
The Census records 0.51 square miles of water within Green County, or 0.1% of its total area. That share is close to Green County’s 0.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Green County has 18.1 times the land area of nearby Monroe town (32.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Dane County, Iowa County, Lafayette County, Rock County within Wisconsin. A tract near one of these lines should be matched to the county identifier on its own records.

