Ballymoney is a town and civil parish in County Antrim, Northern Ireland. It is within the Causeway Coast and Glens Borough Council area. The …Ballymoney is a town and civil parish in County Antrim, Northern Ireland. It is within the Causeway Coast and Glens Borough Council area. The civil parish of Ballymoney is situated in the historic baronies of Dunluce Upper and Kilconway in County Antrim, as well as the barony of North East Liberties of Coleraine in County Londonderry. It had a population of 11,048 people at the 2021 census.