Carrickfergus (from Irish: Carraig Fhearghais, meaning "rock of Fergus"), known locally and colloquially as "Carrick", is a large town in County Antrim, Northern Ireland. It is located on the north shore of Belfast Lough, 11 miles (18 km) from Belfast. The town had a population of 27,903 at the 2011 Census and takes its name from Fergus Mór mac Eirc, the 6th-century king of Dál Riata. It is County Antrim's oldest town and one of the oldest settlements in Ireland as a whole.