How many state parks are there?
State park
10,234
As of 2014, there were 10,234 state park units in the United States, according to the National Association of State Park Directors (NASPD).[2] There are some 739 million annual visits to the country's state parks.[2]  The NASPD further counts over 43,000 miles (69,000km) of trail, 217,367 campsites, and 8,277 cabins and lodges across U.S. state parks.[2] The largest state park system in the United States is Alaska State Parks, with over 100 sites encompassing 3.3 million acres.[3]