Campground B at Maidstone State Park offers 24 campsites located 1 mile past the day use area, featuring tent sites and lean-to shelters with several waterfront options on Maidstone Lake.

The campground provides access to hiking trails, swimming, and boating opportunities, with amenities including restrooms with flush toilets, hot showers, and a sanitary dump station (no hookups).

Bear activity is present in the park, so food and trash must be securely stored in vehicles or bear canisters.