The Northwestern Hawaiian Islands or the Leeward Islands are the small islands and atolls in the Hawaiian island chain located northwest (in some cases, far to the northwest) of the islands of Kauai and Niihau. They are part of the U.S. state of Hawaii except Midway Atoll, which is an unorganized, unincorporated United States territory with temporary residential facilities and is administered by the United States Fish and Wildlife Service. In the state of Hawaii, they are part of Honolulu County. The United States Census Bureau defines this area as Census Tract 114.98 of Honolulu County. Its total land area is 3.1075 square miles (8.048 km).