What is the capital of Ireland?
Dublin sits on Dublin Bay at the mouth of the River Liffey, backed by the Dublin Mountains to the south.
Dublin is the capital and seat of government of Ireland, a role it has held since 1922. Ireland itself has an estimated population of 5,484,367 (2025).
Dublin is also the largest city in Ireland, which is the usual arrangement, though it is far from universal: see the countries where capital and largest city differ.
Dublin at a glance
| City population | 592,713 (2022 census) |
|---|---|
| Metropolitan area | 1,263,219 (2022 census) |
| Country | 🇮🇪 Ireland |
| Founded | 841 |
| Capital since | 1922 |
| Largest city in Ireland | Dublin |
| Time zone | UTC+00:00 (GMT) |
| Currency | Euro (EUR) |
About Dublin
Dublin grew from a Viking settlement established around 841.
Dublin has been the capital of Ireland since 1922, Dublin became the capital of the independent Irish state in 1922, having been Ireland's principal city since the medieval period.
Dublin is the largest city on the island of Ireland and the country's political, economic and cultural centre.
It grew from a Viking trading port into Ireland's dominant city.
City facts sourced from Wikipedia: Dublin.
Frequently asked questions
What is the capital of Ireland?
Is Dublin the largest city in Ireland?
What is the population of Dublin?
Where is Dublin located?
When did Dublin become the capital of Ireland?
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Capitals of neighbouring countries
See the full profile of Ireland on its country page, or browse every capital city.
Capital and country data from open datasets; city and metropolitan populations are hand-curated per city and cited where they are shown. Populations of countries come from the World Bank (SP.POP.TOTL). Full sources and vintage on the data page. Last updated . Report a correction.