Whiterock is a small village in County Down, Northern Ireland. It is within the townland of Killinakin, in the civil parish of Killinchy and historic barony of Dufferin, on the western shore of Strangford Lough, near to the village of Killinchy. It is in the Borough of Ards. It had a population of 355 people (141 households) in the 2011 Census. (2001 Census: 351 people)