Below are the urban areas with more than 100,000 inhabitants in Ireland ranked by population.
Urban Area (or urban agglomeration) population refers to the population contained within the contours of a contiguous territory inhabited at urban density levels, typically comprising a city and its surrounding suburban fringe.
| Rank | Urban Area | Population Estimate (2025) | 1 Year Change (over 2024) | Land Area (Km²) | Density (P/Km²) | Global Rank | Projections (2030) | Projections (2050) |
|---|---|---|---|---|---|---|---|---|
| 1 | Dublin | 1,142,650 | 1.03% | 302 | 3,784 | 453 | 1,180,325 | 1,246,554 |
| 2 | Cork | 154,085 | 1.58% | 54 | 2,853 | 3,940 | 163,087 | 174,257 |
| 3 | Blanchardstown | 108,867 | 1.01% | 25 | 4,355 | 5,680 | 113,076 | 125,282 |
| 4 | Galway | 76,385 | 1.09% | 39 | 1,959 | 8,165 | 80,860 | 86,466 |
| 5 | Swords | 72,254 | 1.03% | 26 | 2,779 | 8,605 | 75,969 | 82,010 |
Source: United Nations, Department of Economic and Social Affairs, Population Division (2025). World Urbanization Prospects: The 2025 Revision, Online Edition.