William O’Brien State Park


Campground Type
State Park

16821 O'Brien Trail North
Marine on St. Croix, Minnesota 55047


William O’Brien State Park

Campground Details

Open: Seasonal
Number of Sites: 204
Number of Sites with Electric: 77

A great "get away" park only one hour from the Twin Cities, William O'Brien provides a beautiful setting for quality recreation along the banks of the St. Croix River. Hiking trails offer quiet exploration of the park's rolling, wooded hills. For anglers, the channels of the St. Croix have northerns, walleye, bass and trout. Ideal for canoeing, the river is also a migratory pathway that offers visitors an exciting diversity of sights and sounds. In the winter, snowshoeing, skiing and camping attract enthusiasts.


Drive-in Sites
120 Sites

Some are located in shaded areas, other are in open areas.

Electric Sites
77 Sites

Located in both campgrounds.

RV Length Limit 60 Feet

Length is measured from front of tow vehicle to rear of vehicle being towed.

Handicapped Accessible Sites
7 Sites

Located near the restrooms.

Group Camp
4 Sites

Sites are rustic with running water and vault toilets.
Riverside Camp - accommodates up to 50 people. Tents only.
Site 1, 2, and 3 - accommodates up to 35 people. Tents only.

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