Carrickfergus was the administrative centre for Carrickfergus Borough Council, before this was amalgamated into the Mid and East Antrim District Council in 2015, and forms part of the Belfast Metropolitan Area.
Carrickfergus var administrativt centrum for Carrickfergus Borough Council, inden det blev lagt sammen til Mid and East Antrim District Council i 2015, og det er en del af Belfast Metropolitan Area.