Northside, Dublin districts, such as Oxmantown, no longer exist. Beyond the centre, areas of the Northside include the below, most (at least two names were invented in the 1960s) of the names being of long heritage, though until recently many were rural townlands. Some are distinct suburbs or villages, others are parts of larger areas: The 'area' is administered both by Dublin City Council (formerly Dublin Corporation) and Fingal County Council, responsible for 84% and 16% of the land area which lies inside the M50 motorway and north of the river Liffey respectively (excluding the Howth peninsula). In general, Dublin postal districts
Newcastle (County Dublin barony) Newcastle (County Dublin barony) Newcastle () is a feudal title of nobility and one of the baronies of Ireland. It was constituted as part of the old county of Dublin. Today, it lies in the modern county of South Dublin. At the heart of the barony is the civil parish of the same name - Newcastle - which is one of eleven civil parishes in the barony. The ruins of the eponymous castle, also known as Newcastle-Lyons, are located in the townland of Newcastle South. The town with the biggest population in the barony is Lucan. It is one of