South Dublin South Dublin South Dublin () is a county in Ireland, within the province of Leinster, and the Dublin Region, a successor to County Dublin, from which its name derives. South Dublin County Council is the local authority for the county. The county contains both dense suburbs of Dublin and stretches of unpopulated mountain. In 2011 it had a population of 278,749, making it the third most populous county in the state. South Dublin has an area of 222.74 square kilometres. It is bounded by Dublin City (15 km to the north east), the River Liffey (separating it from Fingal to
Stepaside, Dublin Stepaside, Dublin Stepaside () is a village on the outskirts of Dublin located on its southside, located in Dún Laoghaire–Rathdown, Ireland. The area is situated 4 kilometres south of Dundrum. A suburb of Dublin, Stepaside lies on the R117 regional road to the south-east of the city, at the foot of Three Rock Mountain. The area is located just off Junction 14 of the M50 motorway. Neighbouring areas include Sandyford, Kilternan, Ballyogan, Leopardstown, Carrickmines and Glencullen. Stepaside village developed in the 18th and early 19th centuries when the adjacent medieval settlement of Kilgobbin was bypassed by a new stretch of