Patos Island Marine State Park is a 207-acre marine park with 20,000-feet of saltwater shoreline. The island is owned by the federal government and is administered by the Bureau of Land Management's Wenatchee Office. The Washington State Parks and Recreation Commission operates a small campground facility at Active Cove near the west side of the island, maintains a 1.5 mile loop trail, and has two offshore mooring buoys.

 The park is open year round for camping and day use.

