5 Biggest Cities in Ireland by Population (2025 Update)

Dublin steals the headlines, but the story of Ireland’s biggest cities is more than just one capital. From Cork’s thriving food scene to Waterford’s Viking roots, each of the top five offers something distinct. This article breaks down the latest population figures and what they mean for the Republic of Ireland — and the island as a whole.

Largest city by population: Dublin (592,713) ·
Second largest city: Cork (222,333) ·
Third largest city: Limerick (102,287) ·
Number of official cities in the Republic: 6 ·
Largest city on the island (including Northern Ireland): Dublin

Key facts at a glance

Six key stats capture the ranking and the quirks of Ireland’s urban landscape, from the capital’s dominance to the curious case of Kilkenny.

The pattern: Dublin’s population dwarfs every other city, but towns like Drogheda rival the smallest cities in size — a reminder that “city” in Ireland is as much a legal title as a demographic reality.

What are the 5 biggest cities in Ireland?

Using the 2022 census figures from Wikipedia’s settlement list — the most widely cited source — the top five by city-proper population are Dublin, Cork, Limerick, Galway and Waterford. But the numbers tell a story of extremes.

1. Dublin – capital and largest city

• City proper population: 592,713 (Wikipedia – 2022 census)
• Greater Dublin Area: 2,082,605 (Wikipedia)
• Dublin accounts for about 11% of the Republic’s city-proper population but over 38% of the national total when the metro area is included.

Dublin’s dominance is historic: it has been the largest settlement on the island since the Middle Ages, except for a short period around 1900 (Wikipedia – population timeline).

2. Cork – second largest city

• City proper population: 222,333 (Wikipedia)
• Metro area (2025 estimate): 305,000 and GDP of €115 billion (YouTube GDP video)
• Cork received city status in the 900s, making it one of Ireland’s oldest urban centres (Wikipedia).

Cork is the undisputed second city in the Republic, though its population is less than half of Dublin’s city proper. Its economy is anchored by pharmaceuticals, technology and food production.

3. Limerick – third largest city

• Population: 102,287 (Wikipedia)
• Located on the River Shannon, Limerick is a historic trading centre and the gateway to the west.

Limerick narrowly stays above the 100,000 mark. It is smaller than many towns in England but holds genuine city status.

4. Galway – fourth largest city

• Population: 85,910 (Wikipedia)
• Often called the “Cultural Capital of the West,” Galway punches above its weight in arts, festivals and tourism.

5. Waterford – fifth largest city

• Population: 53,504 (city proper) with metro estimate around 60,000 in 2025 (YouTube GDP video)
• Founded by Vikings, Waterford claims the title of Ireland’s oldest city.

The top five are all official cities, but the gap from Dublin to Waterford is a factor of more than 10 — a stark illustration of primate-city dynamics.

What is Ireland’s second largest city?

Cork holds the silver medal — and it’s not a close race. With 222,333 residents inside the city boundary, it is more than double the size of third-placed Limerick.

Cork: population, culture and economy

• 2022 census: 222,333 (Wikipedia)
• Worldometers’ 2025 estimate for Cork’s metro area: 154,085 (Worldometers) – showing the gap between urban and administrative definitions.
• GeoNames lists Cork at 190,384, a further reminder of varying methodologies.

Cork’s food scene, tech sector (Apple, Dell have big presences) and cultural confidence make it Dublin’s main rival. Yet its population has grown only modestly compared to the capital’s suburban explosion.

Comparison with Dublin

Five cities, one pattern: Dublin’s lead is unassailable, but the gap raises questions about infrastructure and opportunity.

What this means: Cork is the clear second city by population, but its economic output per capita may be closer to Dublin’s than the headcount suggests. For investors and job-seekers, Cork offers a viable alternative without the capital’s cost-of-living crisis.

What are the 5 cities of Ireland?

The term “city” in Ireland is a legal status, not just a population threshold. The Republic officially recognises six cities: Dublin, Cork, Limerick, Galway, Waterford and Kilkenny (by a 1609 charter). That’s right — Kilkenny has city status despite having a population of only about 27,000.

Official city status in the Republic of Ireland

• Six cities in the Republic: Dublin, Cork, Limerick, Galway, Waterford, Kilkenny (Wikipedia).
• Kilkenny’s 1609 charter grants city status, but it is rarely included in “biggest cities” lists because its population is smaller than many towns.
• Belfast, in Northern Ireland, is the second most populous settlement on the island at 348,005 (Wikipedia).

Cities on the island of Ireland including Northern Ireland

When you count the whole island, the list expands to include Belfast, Derry, Armagh, Newry and Lisburn. Belfast would rank second after Dublin, ahead of Cork.

• Belfast: 348,005 (second largest on the island)
• Derry: ~85,000
• Armagh: ~14,000
• Newry: ~28,000
• Lisburn: ~45,000

So the top five on the whole island would be: Dublin, Belfast, Cork, Limerick and Derry/Galway (depending on boundary definitions).

The trade-off: Using “official city status” includes Kilkenny but excludes large towns like Drogheda (44,578). For a population-based list, the top five are Dublin, Belfast, Cork, Limerick and Galway — a more useful ranking for most readers.

What the experts say

“Dublin has been the largest settlement on the island since the Middle Ages, with the exception of a brief period around 1900.”

— Wikipedia (settlement population history)

“Worldometers lists Dublin’s 2025 population at 1,142,650 – a figure that reflects the metro area, not the city proper.”

— Worldometers (largest cities in Ireland)

“World Population Review projects Dublin’s metro area reaching 1,327,053 by 2026, with Cork at 232,271.”

— World Population Review (Ireland cities 2026 projection)

Ireland’s biggest cities are a story of one giant and four others. For anyone planning a move, investment or holiday, the choice between Dublin’s energy, Cork’s scale, Limerick’s history, Galway’s culture and Waterford’s heritage comes down to what matters most: jobs, space, or quality of life. For the Irish government, the implication is clear: without deliberate regional investment, the pull of Dublin will only grow.

While Dublin leads the cities, Irelands largest county by area offers a different perspective on population distribution across the island.

Frequently asked questions

Related reading

• Cork City
• Dublin