Yes, Wisconsin state parks are open for camping. Of the state's 50+ state parks, nearly all of them allow camping of some kind, whether tent camping, RV camping, or cabin camping. Wisconsin's most popular parks with camping include Devil's Lake State Park south of Baraboo, Peninsula State Park (set on the shores of Lake Michigan in Door County), the year-round Rock Island State Park, Willow River State Park, and Copper Falls State Park.