Newcastle is a small seaside resort town in County Down, Northern Ireland, which had a population of 8,298 at the 2021 Census. It lies by the Irish Sea at the foot of Slieve Donard, the highest of the Mourne Mountains. Newcastle is known for its sandy beach, forests (Donard Forest and Tollymore Forest Park), and mountains. The town lies within the Newry, Mourne and Down District.
Newcastle is a small seaside resort town in County Down, Northern Ireland, which had a population of 8298 at the 2021 Census. It lies by the Irish Sea at the foot of Slieve Donard the highest of the Mourne Mountains Newcastle is known for its sandy beach, forests (Donard Forest and Tollymore Forest Park), and mountains. The town lies within the Newry, Mourne and Down District.