Carrickfergus is a large town in County Antrim, Northern Ireland. It sits on the north shore of Belfast Lough, 11 miles from Belfast. The town had a population of 28,141 at the 2021 census. It is County Antrim's oldest town and one of the oldest towns in Ireland as a whole. Carrickfergus Castle, built in the late 12th century at the behest of Anglo-Norman knight John de Courcy, was the capital of the Earldom of Ulster. After the earldom's collapse, it remained the only English outpost in Ulster for the next four centuries. 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. It is also a townland of 65 acres, a civil parish and a barony.
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