East Lothian is one of the 32 council areas of Scotland, as well as a historic county, registration county and lieutenancy area. The county was called Haddingtonshire until 1921. In 1975, the historic county was incorporated for local government purposes into Lothian Region as East Lothian District, with some slight alterations of its boundaries. The Local Government etc. Act 1994 later created East Lothian as one of 32 modern council areas.