C
- (Louth) Civil Hollow
- (Louth) Clonmore
- (Dublin City) Clanbrassil Street
- (An Longfort) Carrickcarnan
- (Wexford) Carriglawn
- (South Dublin) Cookstown
- (Dublin City) Clonliffe
- (Wexford) Carrickbyrne
- (Westmeath) Castledown
- (Westmeath) Cloncullen
- (Westmeath) Corbally
- (Westmeath) Curristown
- (Westmeath) Clonreagh
- (Westmeath) Corbetstown
- (Westmeath) Clonbore
- (Westmeath) Cloghanstown
- (Westmeath) Chanonstown
- (Westmeath) Clare
- (Westmeath) Crosserdree
- (Westmeath) Caddagh
- (Westmeath) Clondalever
- (Westmeath) Clondavreen
- (Westmeath) Cartenstown
- (Westmeath) Cumminstown
- (Westmeath) Clonarney
- (Westmeath) Cavestown and Rosmead
- (Westmeath) Crowinstown Great
- (Westmeath) Crowinstown Little
- (Westmeath) Casstletowndelvin
- (Westmeath) Clonleame