Hawaii's 2 national parks showcase its unique volcanic landscapes and pristine tropical ecosystems. Montana, Nevada, and New Mexico each have 2 national parks, featuring stunning mountain ranges, desert landscapes, and cultural heritage sites.
The smallest park is Gateway Arch National Park, Missouri, at 192.83 acres (0.7804 km2). The total area protected by national parks is approximately 52.4 million acres (212,000 km2), for an average of 833 thousand acres (3,370 km2) but a median of only 220 thousand acres (890 km2).
The largest national park is Wrangell–St. Elias in Alaska: at over 8 million acres (32,375 km2), it is larger than each of the nine smallest states. The next three largest parks are also in Alaska.
Which States Have the Most State Parks? California has the most state parks in the country, with 270. There are a total of 3,729 state parks in the United States, with 11 states having more than 100 state parks each. Rhode Island comes in last with just 15 state parks.
The state with the highest percentage of state and national park coverage is Hawaii, with parks covering 9.41% of the state's 4,134,000 acres. Its 50 state parks cover 30,000 acres, while the two national parks in Hawaii make up 358,870 acres.
National Park of American Samoa: The least-visited US national park in 2022 saw just 1,887 visits. Most visitors will need a passport to travel to American Samoa. 2. Gates of the Arctic National Park and Preserve, Alaska: This vast park contains no roads or trails.
American Samoa National Park – South PacificWhile not located in the United States, the US territories of American Samoa National Park are arguably the most remote.
Fires (including charcoal) are prohibited unless approved by the Superintendent. Hunting and trapping are prohibited at the park in its effort to protect wildlife. The viewing of wildlife with artificial light is also prohibited.