Castle is one of the ten district electoral areas in Belfast, Northern Ireland. Located in the north of the city, the district elects six members to Belfast City Council and contains the wards of Bellevue, Cavehill, Chichester Park, Duncairn, Fortwilliam and Innisfayle. Castle, along with Oldpark district and parts of the Court district and Newtownabbey Borough Council, forms the Belfast North constituency for the Northern Ireland Assembly and UK Parliament. The district is bounded to the east by the Victoria Channel, to the north by Newtownabbey Borough Council and Belfast Lough, to the south by North Street and to the west by the Cavehill Road.