Millbay is a small Hamlet on Islandmagee in County Antrim, Northern Ireland. Originally called Carnspindle Bay, nicknamed Millbay as there was a mill in the bay.Millbay is within the townland of Carnspindle. It is in the Larne Borough Council area. In the 2011 census it had a population of 103 people (40 households).
Ballylumford Dolmen, locally known as the "Druid's Altar", is an archeological site where artifacts from an ancient burial chamber have been recovered.
See also List of towns and villages in Northern Ireland
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