The corporation was formed by Section 3 of the Local Government Act (Dublin) 1930 from the four Urban Districts of Dún Laoghaire, Blackrock, Dalkey, and Killiney and Ballybrack. Plans to merge these coastal authorities were first made in 1903, a bill to effect this was being drawn up in 1924, but this was abandoned when the Government of Ireland proposed their own legislation to reorganise local government in County Dublin. The corporation headquarters was in Dún Laoghaire Town Hall. Dún Laoghaire was one of seven (non-county) boroughs and urban districts with its own Vocational Education Committee (VEC).
Under the Local Government (Dublin) Act, 1993, Dublin County Council was divided in three. The Corporation of Dún Laoghaire was abolished and its powers transferred to the new Dún Laoghaire–Rathdown County Council. This act took effect in 1994. Whereas the VECs of other boroughs and urban districts were absorbed by the surrounding county's VEC in 1997, Dún Laoghaire VEC remained in existence until VECs were abolished in 2013, whereupon its functions were transferred to Dublin and Dún Laoghaire Education and Training Board.