As far as WI campgrounds go, we are state park people. A few of our favorites in the northern part of the state are Crystal-Muskie by Minoqua, Wissota Lake just north of Eau Claire. Went to our first private campground last year, a KOA in Hayward WI. Pretty nice place, but a whole different type of camping. My daughter had a blast in the pool and water slide.
If you want a state campround close the Mpls/St Paul, look at Willow River State Park close to Hudson WI, a stones throw from Mpls. Also, I have never been here, but keep hearing good things about Lebanon Hills Regional Park, pretty close to Mall of America.
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