William O'Brien State Park

Exploring Minnesota feels incomplete without stopping by State park; William O'Brien State Park is recorded as one of the State park around Minnesota - USA. William O'Brien State Park is a USA featured on CityPlaceList, a directory that gathers verified place data in one place. You will find it at William O'Brien State Park, 16821 O'Brien Trl N, Marine on St Croix, MN 55047, United States, an address that is easy to plug into any navigation app. Visitors give it a 4.6 out of 5 across 1327 reviews, a signal worth reading alongside the details below. The surrounding MN 55047 area adds more options if this spot turns out to be busy.

Everything on this page is compiled automatically from the source data and was last refreshed on Sep 23, 2026; nothing unverifiable has been added. As with any plan, confirm opening hours and prices directly with William O'Brien State Park before heading out.

You can also explore other State park spots in Minnesota like Southern Trailhead, William O'Brien State Park, Walter F. Mondale River Trailhead and Petaga Campground to enrich your trip and broaden your horizons — find full details in the guide table on Minnesota State Parks Best Parks, Lakes and Places to Exp....