Helen's Bay is a village on the northern coast of County Down, Northern Ireland.
It is within the townland of Ballygrot (from Irish Baile gCrot, meaning 'settlement of hillocks'), between Holywood, Crawfordsburn and Bangor. It is served by a railway station and had a population of 1,390 in the 2011 Census. It is part of the Ards and North Down Borough Council area.
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