About Us
Our Story
Welcome to Willow Mill
More Than a Campground. A Community.
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.
Whether you’re here for a weekend or putting down roots for the season, Willow Mill offers the amenities you need and the peaceful setting you deserve — from a seasonal pool and kayak rentals to mini golf, a game room, and a pet-friendly dog park.
4.4
Google Rating
1968
Established
Ways to Stay
Find Your Perfect Stay
RV Sites
Our spacious, shaded sites offer water and electric hookups, with sewer on select sites. Stop by for a weekend or claim your spot for the season — pull-through and back-in sites available, with picnic tables and fire rings included.
DetailsGoogle Reviews
What Our Guests Are Saying
Mike Thibodeau
3 months ago
“What a great group of people over here. Didn't camp there due to the fact my family has property about 10 minutes up the road. However on our way into town from ohio I missed the last truck stop with water. Called ahead and for what I would say was an extremely fair price let me pull in and fill my camper up with water. The maintenance guy and filled it then went and unlocked a gate on the other side so I didnt have to try and back out or drive all the way through and around. Even though I wasn't going to be camping there the friendliness of the staff was amazing. Thank you guys”
NATE WOODELL
2 months ago
“The family and l had a great time at Willow Mill! Staff was super accommodating, the cabin was great, kids had a blast swimming in the pool, fishing, playing games and exploring. Looking forward to our next stay there!”
Chris Zurn
4 months ago
“Great experience camping. Can't wait to see it after all the upgrades are completed. Becoming very kid/family oriented. Definitely recommend.”
Renita Flickinger
2 months ago
“Pulled in driving through no reservations they let us kind of pick our site. It was wonderful. The store had prices that were great for the grandkids. I appreciated their accommodations.”
Mike Thibodeau
3 months ago
“What a great group of people over here. Didn't camp there due to the fact my family has property about 10 minutes up the road. However on our way into town from ohio I missed the last truck stop with water. Called ahead and for what I would say was an extremely fair price let me pull in and fill my camper up with water. The maintenance guy and filled it then went and unlocked a gate on the other side so I didnt have to try and back out or drive all the way through and around. Even though I wasn't going to be camping there the friendliness of the staff was amazing. Thank you guys”
NATE WOODELL
2 months ago
“The family and l had a great time at Willow Mill! Staff was super accommodating, the cabin was great, kids had a blast swimming in the pool, fishing, playing games and exploring. Looking forward to our next stay there!”
Chris Zurn
4 months ago
“Great experience camping. Can't wait to see it after all the upgrades are completed. Becoming very kid/family oriented. Definitely recommend.”
Renita Flickinger
2 months ago
“Pulled in driving through no reservations they let us kind of pick our site. It was wonderful. The store had prices that were great for the grandkids. I appreciated their accommodations.”
Ready to Experience Willow Mill?
Shaded sites, full hookups, and a community that keeps you coming back. Book your stay today or give us a call — we’d love to help you find your perfect spot.