Hawaiʻi County is a county located in the U.S. state of Hawaii in the Hawaiian Islands. It is coterminous with the Island of Hawaiʻi, often called the "Big Island" to distinguish it from the state as a whole. As of the 2010 Census the population was 185,079. The county seat is Hilo. There are no incorporated cities in Hawaiʻi County (see Hawaii Counties). The Hilo Micropolitan Statistical Area includes all of Hawaiʻi County. Hawaiʻi County has a mayor-council form of government.
Hawaii County is one of seven counties in the United States to share the same name as the state they are located in (the other six counties are Arkansas County, Idaho County, Iowa County, New York County, Oklahoma County, and Utah County).