Lisburn and Castlereagh is a local government district in Northern Ireland. The district was created on 1 April 2015. It consists of the combined area of the City of Lisburn with the Borough of Castlereagh, but not including 'the localities of Gilnahirk, Tullycarnet, Braniel, Castlereagh, Merok, Cregagh, Wynchurch, Glencregagh and Belvoir, Collin Glen, Poleglass, Lagmore, Twinbrook, Kilwee and Dunmurry' which transferred to Belfast. The local authority is Lisburn and Castlereagh City Council. The district takes in many of the outer suburbs of Belfast and had an electorate of 83,369 prior to its formation. The name of the new district was recommended on 17 September 2008. The area covered by the new Council has an estimated population of 144,381 residents. (Source: Wikipedia.org, CC BY-SA)