Hawaii County (Hawaiian: Kalana o Hawaiʻi) (officially known as the County of Hawaiʻi) is a county in the U.S. state of Hawaii in the Hawaiian Islands. It is coextensive with the Island of Hawaii, often called the "Big Island" to distinguish it from the state as a whole. The 2020 Census population was 200,629. The county seat is Hilo. There are no incorporated cities in Hawaii County (see Hawaii Counties). The Hilo Micropolitan Statistical Area includes all of Hawaii County. Hawaii County has a mayor–council form of government. Hawaii County is the largest county in the state in terms of geography.