THE ST. CROIX COUNTY LAND BRIEF
Land in the
Lower St. Croix and Vermillion Valleys setting.
St. Croix County has 722.2 square miles of land in Wisconsin. 4 mapped landscape regions meet across St. Croix County: Lower St. Croix and Vermillion Valleys, Central Wisconsin Undulating Till Plain, St. Croix Stagnation Moraines, among others.
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
St. Croix County intersects 4 mapped regional units. The largest mapped shares are:
- Lower St. Croix and Vermillion Valleys51.7%
- Central Wisconsin Undulating Till Plain22.7%
- St. Croix Stagnation Moraines19.7%
- Blufflands and Coulees5.9%
North Central Hardwood Forests in St. Croix County
This transition between northern forests and southern farming country includes lakes, wetlands and hardwood woodland. Glacial landforms support a mosaic of open land and wooded areas.
Read the regional source ↗Driftless Area in St. Croix 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 St. Croix County
The atlas lists 37 cities, towns, townships, and Census communities associated with St. Croix County, including Somerset, Forest, Troy. The list includes overlapping geography types and does not divide the county into exclusive service areas.
St. Croix County by land and water
The Census records 13 square miles of water within St. Croix County, or 1.8% of its total area. That share is close to St. Croix County’s 1.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, St. Croix County has 22.2 times the land area of nearby Hammond town (32.5 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Barron County, Dunn County, Pierce County, Polk County within Wisconsin. A tract near one of these lines should be matched to the county identifier on its own records.

