Seven national parks (including six in Alaska) are paired with a National Preserve, areas with different levels of protection that are administered together but considered separate units and whose areas are not included in the figures below.
Seven national parks (including six in Alaska) are paired with a National Preserve. A National Preserve is areas with different levels of protection. These areas with different levels of protection are administered together. These areas with different levels of protection are considered separate units. These areas with different levels of protection are considered whose areas are not included in the figures below.