The Catskill Park is the designation for a large area of eastern New York centered on the Catskill Mountains. Like Adirondack Park to the north, the area is unusual in the United States because, while the entire area is considered "parkland", as of 2005 about 54 percent of the land within the boundary consists of privately owned inholdings. Another 5 percent is owned by New York City to protect four of the city's reservoirs that either lie partially within the park or have watersheds encompassing parts of the park. The remaining 41 percent, or 287,500 acres (116,300 ha), is publicly owned by the state as part of the Forest Preserve.
Like Adirondack Park, the total acreage is defined by a Blue Line which encompasses all or part of four counties: Delaware, Greene, Sullivan, and Ulster, amounting to about 700,000 acres (280,000 ha; 2,800 km).
