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William O'Brien State Park

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Where to go: FINAL REPORT: All park trails are open and in great condition.

What you'll see: The ground is covered in a blanket of multi colored leaves and orange pine needles.

Also of interest: Join us for Falloween weekend at William O'Brien! Crafting programs at both 1 and 2 PM on Saturday, followed by trick or treating from 6-9 PM. Please see the online events calender for more info.

Last updated: October 17, 2012 

Special Offer for Park Permits

Can’t decide between a one-day or year-round park permit? The DNR has a special offer that can help. Start by purchasing a one-day permit for $5 and visit as many state parks as possible. After visiting the state parks, trade in the one-day permit by the end of that day and get $5 off the purchase of a year-round permit. Year-round permits, which cost $25, provide unlimited access to all 75 Minnesota state parks and recreation areas for a full year from the month of purchase.
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Getting there

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


The park is located 12 miles north of Stillwater, just north of the town of Marine on St. Croix. The park entrance is located right on State Highway 95. After turning onto the park road the ranger station is immediately on your right.
GPS Coordinates:
45 13.521
92 45.827

Contact

Phone: 651-433-0500


Email: williamobrien.statepark@state.mn.us


Best time to contact the park:

Spring, Summer & Fall: Daily, 8 a.m.

Winter: Hours will vary. If no one is available, please leave a message.

More information

Park maps

Park camping & lodging


Park trails


Park web site

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