Newcastle, County Dublin

Newcastle
An Caisleán Nua
Village
St Finian's Church in Newcastle adjoins an earlier residential fortified tower
Newcastle
Location in Ireland
Coordinates: 53°18′N 6°30′W / 53.300°N 6.500°W / 53.300; -6.500
CountryIreland
ProvinceLeinster
CountyCounty Dublin
Local government areaSouth Dublin
Population
 (2022)
4,526
Time zoneUTC+0 (WET)
  Summer (DST)UTC-1 (IST (WEST))
Eircode routing key
D22

Newcastle (Irish: An Caisleán Nua) is a village in South Dublin county south-west of Dublin, Ireland. It is also a civil parish in the historical barony of the same name. It was the location of the castle of the barony, which in historical and official documents is described as Newcastle-Lyons. The area is still primarily rural in nature. Newcastle village is within the administrative area of South Dublin County Council.