State park

William O'Brien State Park

The park entrance is 2 miles from Marine on St. Croix. Day use costs Vehicle permit $7/day or $35/year. William O'Brien State Park is a state park in Minnesota.

William O'Brien State Park
Photo: Greg Seitz ( The.dharma.bum at English Wikipedia ), CC BY-SA 2.5

William O'Brien State Park map

William O'Brien State Park boundary from USGS PAD-US or the managing agency, simplified for display. Not for navigation or legal boundaries.

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Fire restrictions

Fire restriction orders for this unit are not tracked here yet. Restrictions change with the season, so check the current orders before any campfire, stove or target shooting.

Common questions

Sites can be reserved in advance.
Entry to William O'Brien State Park costs Vehicle permit $7/day or $35/year.
William O'Brien State Park is 2 miles from Marine on St. Croix.
Yes, dogs are allowed at William O'Brien State Park.
Yes, Croix River is open to swimming at William O'Brien State Park.
Yes, William O'Brien State Park has cabins available.

Before you go

William O'Brien State Park is 2 miles from Marine on St. Croix.

Camping at William O'Brien State Park

Sites can be reserved in advance.

Reserve a site with the park's booking system

Trails

  • Signup 01 Sign up for updates Submit Event update Trail Named on agency park page
  • GovDelivery Signup 02 Sign up for the monthly Trail Named on agency park page

What to see

  • State park Designation in agency park name
  • State park system unit Listed on the agency park identity roster

Swimming

  • Croix River