The Unorganized Borough is the part of the U.S. state of Alaska not contained in any of its 19 organized boroughs. It encompasses more than half of Alaska's area, , an area larger than any other U.S. state, and larger than the land area of the smallest 16 states combined. As of the 2000 U.S. Census, it had a population of 81,803, 13% of the population of the state.