How many campgrounds are at Grand Lake St. Marys State Park?

74 campgrounds at Grand Lake St. Marys State Park near Saint Marys, Ohio.

Are there campsites available at Grand Lake St. Marys State Park this weekend?

No. Grand Lake St. Marys State Park is fully booked this weekend (September 11). Cancellations occur daily—set alerts to get notified when sites open.

Where is Grand Lake St. Marys State Park?

Ohio, near Saint Marys. 74 campgrounds with reservable sites.

What amenities are at Grand Lake St. Marys State Park?

Electrical Outlets, Bbq/Grill, Shade, Fire Ring, Picnic Table, Air Conditioning. Amenities vary by campground.

Camping at Grand Lake St. Marys State Park in Ohio

Grand Lake St. Marys State Park Camping

★4.3rating

74 campgroundsNear Saint Marys, Ohio

About Grand Lake St. Marys State Park

Grand Lake St. Marys State Park has 74 reservable campgrounds, booked through Ohio State Parks — including Grand Lake Camp Sites 1-120, Grand Lake Camp Sites 121-217, Grand Lake St. Marys Shelters, Bass Landing, Bayview East & Diamond Point and Bayview Marina. It's one of the camping destinations we track in Ohio.

Popular sites can fill up on peak weekends, and cancellations open up more often than you'd expect. Campsite Tonight monitors every Grand Lake St. Marys State Park campground around the clock and alerts you the moment a cancellation opens a site on Ohio State Parks.