Wisconsin · St. Croix River · Interstate Park · Minnesota Border

Polk County, Wisconsin

Interstate State Park's ancient potholes and St. Croix Falls' river town — from Interstate State Park's glacial potholes (the world's deepest, drilled into basalt by Ice Age glacial meltwater) to the St. Croix National Scenic Riverway's most dramatic gorge section, Osceola's Cascade Falls, and a western Wisconsin county where the St. Croix River forms a shared natural boundary between Wisconsin and Minnesota of extraordinary scenic quality.

County Seat Balsam Lake
Population 45,500
County Website co.polk.wi.us/board
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