The Greater Dublin Area (GDA; Irish: Mórcheantar Bhaile Átha Cliath), or simply Greater Dublin, is an informal term that is taken to include the city of Dublin and its hinterland, with varying definitions as to its extent. At the expansive end, it has been defined as including all of the traditional County Dublin and three neighbouring counties, while more commonly it is taken as the contiguous metropolitan area of Dublin plus suburban and commuter towns. The area is defined for strategic planning, and, for example, transport, and it is not a formal administrative or political unit. Definitions Planning usage The 2003 Regional Planning Guidelines referred to the Greater Dublin Area as a planning district separated into a "metropolitan area" and a "hinterland area". The "metropolitan area" included both suburbs and commuter towns, covering the area from Swords and Malahide in Fingal, to Greystones in County Wicklow in the south, and as far west as Kilcock in County Kildare. This area differs from the Garda "metropolitan region" scope, in that it stretches approximately 20 km further west. The Dublin Metropolitan Area is now defined as: The Dublin "Hinterland" area is aligned with the Draft National Planning Framework, which defines city regions or urban hinterlands as those EDs where at least 15% of the workforce (Full POWCAR) are employed in the Dublin Metropolitan Area (NTA boundary). Dublin Transport Authority At the broader end of definitions, the Dublin Transport Authority Act 2008 defines the Greater Dublin Area as including the counties of Dublin (Dublin City, South Dublin, Dún Laoghaire–Rathdown and Fingal), Meath, Kildare, and Wicklow; as of 2022, its estimated population is 2,073,459. Former boundaries The urban part of Dublin and surrounding areas has been defined by various statutory instruments, mainly those referring to the Garda Síochána and Courts of the Republic of Ireland. The city, three other counties within the traditional County Dublin, and three neighbouring counties, were grouped together in the order creating the Dublin Transportation Office, giving functions and representations to the office in this area, although not using the term. The office was purely advisory and had no executive powers. The term was later defined in section 3 of the Dublin Transport Authority Act 2008. On 1 December 2009 the DTO became the National Transport Authority, with a remit expanding beyond the Greater Dublin Area. Garda usage The Garda used the term the Dublin Metropolitan Region (DMR) which was