The islands are grouped into four states, which are Yap, Chuuk (called Truk until January 1990), Pohnpei (known as "Ponape" until November 1984), and Kosrae (formerly Kusaie).
Os catro grupos de illas que os constitúen son Yap, Chuuk (chamado Truk ata xaneiro de 1990), Pohnpei (chamado Ponape ata novembro de 1984), e Kosrae.