Baile Átha Cliath
Capital city
Clockwise, from top: Samuel Beckett Bridge, Trinity College, The Custom House, Dublin Castle, O'Connell Bridge, Convention Centre
Flag of Dublin
Coat of arms of Dublin
Coat of arms
The Fair City
Obedientia Civium Urbis Felicitas
'The Obedience of the citizens produces a happy city'.
Alternatively translated as
'An Obedient Citizenry Produces a Happy City'
Dublin is located in Ireland
Location within Ireland
Dublin is located in Europe
Location within Europe
Coordinates: 53°21′N 6°16′W / 53.350°N 6.267°W / 53.350; -6.267Coordinates: 53°21′N 6°16′W / 53.350°N 6.267°W / 53.350; -6.267
 • TypeCity Council
 • HeadquartersDublin City Hall
 • Lord MayorPaul McAuliffe (FF)
 • Dáil ÉireannDublin Central
Dublin Bay North
Dublin North-West
Dublin South-Central
Dublin Bay South
 • European ParliamentDublin constituency
 • Capital city115 km2 (44 sq mi)
 • Urban
318 km2 (123 sq mi)
 • Capital city554,554
 • Density4,811/km2 (12,460/sq mi)
 • Urban
 • Metro
 • Greater Dublin
 • Ethnicity
(2011 Census)
DemonymsDubliner, Dub
Time zoneUTC0 (GMT)
 • Summer (DST)UTC+1 (IST)
D01 to D18, D20, D22, D24 & D6W
Area code(s)01 (+3531)
GDP€106 billion
GDP per capita€79,000

Dublin (/ˈdʌblɪn/, locally /ˈdʊb-/; Irish: Baile Átha Cliath [ˈbˠalʲə aːhə ˈclʲiə; ˌbʲlʲaː ˈclʲiə]) is the capital and largest city of Ireland. Situated on a bay on the east coast, at the mouth of the River Liffey, it lies within the province of Leinster. It is bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. It has an urban area population of 1,173,179, while the population of the Dublin Region (formerly County Dublin) as of 2016 was 1,347,359. The population of the Greater Dublin Area was 1,904,806 per the 2016 census.

There is archaeological debate regarding precisely where Dublin was established by the Gaels in or before the 7th century AD. Later expanded as a Viking settlement, the Kingdom of Dublin, the city became Ireland's principal settlement following the Norman invasion. The city expanded rapidly from the 17th century and was briefly the second largest city in the British Empire before the Acts of Union in 1800. Following the partition of Ireland in 1922, Dublin became the capital of the Irish Free State, later renamed Ireland.

Dublin is a historical and contemporary centre for education, the arts, administration and industry. As of 2018 the city was listed by the Globalization and World Cities Research Network (GaWC) as a global city, with a ranking of "Alpha −", which places it amongst the top thirty cities in the world.