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
Transport in Ireland Centre, Dublin Airport and Dublin City. Other operators such as Irish Citylink and GoBus.ie compete on the Dublin-Galway route. Matthews Coaches run a direct service from Bettystown, Laytown and Julianstown to Dublin whilst Dublin Coach operate services to Portlaoise and Limerick. JJ Kavanagh and Sons also operates regular services on the Portlaoise/Limerick route as well as offering services to Waterford, Carlow, Kilkenny, Clonmel and a selection of regional towns and villages in the south. Some private rural operators exist, such as Halpenny's in Blackrock, County Louth, which was the first private bus operator to run a public service in Ireland,