The Unorganized Borough is made up of the parts of the U.S. state of Alaska which are not contained in any of its 19 organized boroughs. It encompasses nearly half of Alaska's land 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, which was 13% of the population of the state.