Plains's the plural of plain, a geographical feature. Plains or The Plains may also refer to: LocationsCanada Three Mile Plains, Nova Scotia Five Mile Plains, Nova ScotiaUnited States The Great Plains Plains, California, a former settlement in the state's Central Valley Plains, Georgia, home town of former U.S. President Jimmy Carter Plains, Kansas Plains, Montana The Plains, Ohio Plains Township, Luzerne County, Pennsylvania Plains, Texas The Plains, Virginia United Kingdom Plains, N… (More on Plains)