County Dublin (Irish: Contae Atha Cliath) is a county in Ireland. It is part of the Dublin Region and is also located in the province of Leinster. It is named after the city of Dublin which is the capital of Ireland. County Dublin was one of the first of the parts of Ireland to be shired by King John of England following the Norman invasion of Ireland. The area of the county no longer has a single local authority; local government is now split between three authorities. The population of the county at large, which includes Dublin city, was 1,270,603 according to the census of 2011.