A placename: • A large number of places in the United States: • A town, the county seat of Barbour County, Alabama; named for Georgia jurist and congressman Augustin Smith Clayton. • A city in Contra Costa County, California; named for founder Joel Henry Clayton. • A town in Kent County and New Castle County, Delaware; named for John M. Clayton. • A city, the county seat of Rabun County, Georgia; named for Augustin Smith Clayton. • A minor city in Custer County, Idaho; the smallest city in the United States, named for early settler Clayton Smith. • A village and township in Adams County, Illinois; named for Henry Clay. • A town in Liberty Township, Hendricks County, Indiana; named for Kentucky statesman Henry Clay. • A minor city in Clayton County, Iowa. • A minor city in Decatur County and Norton County, Kansas; named for the clay in the area. • A town in Concordia Parish, Louisiana. • An unincorporated community in Harford County, Maryland. • A community in the town of New Marlborough, Berkshire County, Massachusetts. • A village in Hudson Township and Dover Township, Lenawee County, Michigan. • An unincorporated community in Tunica County, Mississippi. • A city, the county seat of St. Louis County, Missouri; named for landowner Ralph Clayton. • A borough in Gloucester County, New Jersey. • A town, the county seat of Union County, New Mexico; named for Clayton Dorsey, son of Arkansas statesman Stephen Wallace Dorsey. • A town and village in Jefferson County, New York; named for lawyer and politician John M. Clayton. • A town in Johnston County, North Carolina. • A city in Montgomery County, Ohio; named for John Clayton, a War of 1812 veteran. • A town in Pushmataha County, Oklahoma; named for the city in Missouri. • An unincorporated community in Hereford Township and Washington Township, Berks County, Pennsylvania. • An unincorporated community in Panola County, Texas. • A census-designated place in Stevens County, Washington. • An unincorporated community in Summers County, West Virginia. • A town in Crawford County, Wisconsin. • A town and village in Polk County, Wisconsin; named for Clayton Rogers, the foreman of the town's sawmill. • A town in Winnebago County, Wisconsin. • A number of townships in the United States, listed under Clayton Township. • Ellipsis of Clayton County. • A place in Canada: • A community in the town of Mississippi Mills, Lanark County, Ontario. • A rural municipality (the Rural Municipality of Clayton No. 333) in east Saskatchewan. • A few places in England: • A suburb of the city of Manchester, Greater Manchester; named for the Clayton family which owned land nearby (OS grid ref SJ8898). • A village in Clayton with Frickley parish, Metropolitan Borough of Doncaster, South Yorkshire (OS grid ref SE4507). • A suburb of Newcastle-under-Lyme, Staffordshire (OS grid ref SJ8544). • A village in Hassocks parish, Mid Sussex district, West Sussex (OS grid ref TQ2914). • A suburban village and civil parish in the Metropolitan Borough of Bradford, West Yorkshire (OS grid ref SE1231). • A village south-west of Guardbridge, north-east Fife council area, Scotland (OS grid ref NO4318) • A suburb of Melbourne, Victoria, Australia; named for proprietor John Hughes Clayton. • A habitational surname from Old English. • A male given name transferred from the surname.