East Ayrshire is one of 32 unitary council areas of Scotland. It shares borders with Dumfries and Galloway, East Renfrewshire, North Ayrshire, South Ayrshire and South Lanarkshire. The headquarters of the council are located on London Road, Kilmarnock. With South Ayrshire and the mainland areas of North Ayrshire, it formed the former county of Ayrshire. East Ayrshire had a population of 122,100 at the 2011 census, making it the 16th most populous local authority in Scotland.