Cancellation alerts

William O Brien State Park

We watch every site at William O Brien State Park 24/7, then email you the moment a cancellation opens up.

95% of weekends booked at top sites·Peak Jul–Sep·127 sites

Set up an alert for William O Brien State Park →

Pick your dates, pick the sites you want, we do the watching.

Park favorites

The 10 most popular campsites at William O Brien State Park

The hardest sites to book at this park, reserving 95% of weekend nights in peak season (Jul–Sep). Set up an alert and we'll email you on cancellations.

Site 15E

Best here

Ranked #1 of 127

Campsite Electric · Sleeps 6

Site RVRS

Top pick

Ranked #2 of 127

Group Site · Sleeps 50

Site COPA

Top pick

Ranked #3 of 127

CABIN · Sleeps 5

Site MARI

Top pick

Ranked #4 of 127

CABIN · Sleeps 5

Site ARCO

Top pick

Ranked #5 of 127

CABIN · Sleeps 5 · Waterfront

Site 76E

Top pick

Ranked #6 of 127

Campsite Electric · Sleeps 6

Site 87E

Top pick

Ranked #7 of 127

Campsite Electric · Sleeps 6

Site 16E

Top pick

Ranked #8 of 127

Campsite Electric · Sleeps 6

Site 50E

Standout

Ranked #9 of 127

Campsite Electric · Sleeps 6

Site 38E

Standout

Ranked #10 of 127

Campsite Electric · Sleeps 6

These sites rebook within minutes of being cancelled. Set an alert at William O Brien State Park and we’ll email you the moment one opens up.

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About this park

Discover a beautiful setting for canoeing, fishing, hiking, and other recreation along the banks of the St. Croix River. In winter, 12 miles of groomed trails await classic and skate skiing enthusiasts. Interpretive programs are offered year-round. Nature programsHiking trails Paved bike trails Groomed classic x-country skiVisitor center Picnic shelter Swimming beachFishing pier Drive-in boat accessWinter warming shelter Canoe Rental Kayak Rental Stand-up Paddleboard Rental