How many state parks are there?
State park
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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]