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 Republic of Ireland, outside Dublin, including an express coach network connecting most cities in Ireland, along with local bus services in the provincial cities. Bus Átha Cliath (Dublin Bus), a sister company of Bus Éireann, provides most of the bus services in Dublin, with some other operators providing a number of routes. These include Aircoach, a subsidiary of FirstGroup which provides services to Dublin Airport from Dublin city centre, South Dublin City, Greystones and Bray. They also operate two intercity express non-stop services service between Dublin Airport, Dublin City Centre, and Cork and also a non-stop route between Belfast City