Baldoyle is a coastal suburb of Dublin, Ireland, it was developed from a former fishing village. Baldoyle is also a civil parish in the barony of Coolock within the traditional County Dublin. Baldoyle is located northeast of the city, and borders Donaghmede, which was formed from its western part, Portmarnock, Sutton and Bayside. It can be accessed from the …Baldoyle is a coastal suburb of Dublin, Ireland, it was developed from a former fishing village. Baldoyle is also a civil parish in the barony of Coolock within the traditional County Dublin. Baldoyle is located northeast of the city, and borders Donaghmede, which was formed from its western part, Portmarnock, Sutton and Bayside. It can be accessed from the coast road from Dublin to Howth, which includes a cycle track, from Sutton Cross via Station Road, or from Donaghmede, or Portmarnock.