Sligo Population 2026
Sligo has a population of 20,608, making it the #28 biggest city in 🇮🇪 Ireland, located in Connacht. Roughly 0.4% of Ireland's population lives here. It is about 50× smaller than Dublin, the country's biggest city.
Population (city proper)
20,608
Rank in Ireland
#28
Coordinates
54.27°N, 8.47°W
~13 m elevation · Europe/Dublin
Distance to capital (Dublin)
179 km
111 miles, straight line
Other big cities in Connacht
| City | Population | Rank in Ireland |
|---|---|---|
| Galway | 85,910 | #4 |
Cities near Sligo
- Letterkenny22,549 people · ~89 km away
- Athlone22,869 people · ~100 km away
- An Muileann gCearr22,667 people · ~111 km away
- Galway85,910 people · ~117 km away
- Tullamore15,598 people · ~128 km away
- Navan33,886 people · ~136 km away
FAQ
What is the population of Sligo?
Sligo has a population of 20,608 (city proper, latest official figure via GeoNames), making it the #28 biggest city in Ireland.
What region is Sligo in?
Sligo is located in Connacht, Ireland.
Is Sligo the capital of Ireland?
No, the capital of Ireland is Dublin, about 179 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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