
RV Sites
Our RV sites come with water and electric connections — select sites also include sewer. Plenty of large, shaded spots to choose from, with options for a quick weekend visit or a full seasonal stay.
Details
Welcome to Willow Mill Campsite - a family-oriented campground on the water in Rio, Wisconsin, and one of Columbia County’s best-kept secrets since 1968.
Reserve Your Site1968
Established
211
Sites
Welcome to Willow Mill Campsite, a family-oriented, waterfront campsite in Rio, Wisconsin, and a Columbia County favorite since 1968. Set along County Highway SS, our lakefront property features spacious, shaded campsites with picnic tables, and relaxing water views. Guests can enjoy a seasonal pool, kayak rentals, mini golf, a game room, pavilion, and a pet-friendly dog park. The camp store offers firewood, ice, RV supplies, propane refills, snacks, and frozen foods, while practical amenities include laundry facilities, private bathrooms, and free WiFi near the store. Open through October 15, Willow Mill is a great place to relax, unwind, and enjoy the outdoors.
Located near some of Wisconsin’s top destinations, Willow Mill makes an excellent home base for exploring the area. Madison, about 30 miles southwest, offers attractions such as Henry Vilas Zoo, Capitol Square, State Street, and Lake Mendota. Wisconsin Dells, roughly 35 miles north, is famous for its waterparks, river tours, and family attractions. Closer to camp, Chandler Park provides additional outdoor recreation opportunities. Whether you’re planning a quiet camping retreat or a fun-filled family getaway, Willow Mill Campsite offers the perfect balance of comfort, recreation, and convenience.
Ways to Stay

Our RV sites come with water and electric connections — select sites also include sewer. Plenty of large, shaded spots to choose from, with options for a quick weekend visit or a full seasonal stay.
DetailsAmenities

Walking Trails

Playground

Dog Park

Mini Golf

Swimming Pool

Kayak Rentals

Game Room
Not sure which site is right for you? Give us a call.
(920) 992-1212Google Reviews
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N5830 County Hwy SS, Rio, WI 53960
(920) 992-1212
Whether you are booking a weekend getaway or settling in for longer, we would love to have you.