Is the Adirondack Park a National Park?
The quick answer: no, the Adirondack Park is not a National Park. It is a state park in Upstate New York that is comprised of both public and private land. There's often confusion about what kind of protected park the Adirondack Park is. It's massive at more than six million acres, and is larger than several National Parks combined, but it's not a National Park itself. There's no entry fee – which can range from $15 to $30 at National Parks – and the "gates" don't close at the end of the night.
A large portion of the Adirondack Park is made up of Forest Preserve, which comes with its own land-use codes and regulations. As noted above, most of New York State's Forest Preserve is located in the Adirondacks, totaling 2.6 million acres, as well as 286,000 acres in the Catskill Forest Preserve. These are the only two areas in the state that are designated as "Forever Wild" – meaning the land is protected under Article XIV of the New York State Constitution – " to preserve the exceptional scenic, recreational and ecological value." (Source: http://www.dec.ny.gov/lands/4960.html)
This amendment to the state constitution ensures that forest preserve lands won't be logged for timber, and certain areas will be maintained according to unit management plans for recreation, including skiing, hunting, fishing, hiking, camping, and mountain biking.
So, the Adirondacks are partially a state park, made up of state-designated areas including wild forest, wilderness, canoe, primitive, historic, and state administrative lands. The remaining 3.4 million acres are privately owned and the land use is regulated by the Adirondack Park Agency. This area includes towns and villages, farms, and businesses.