Letterkenny Population 2026

Letterkenny has a population of 22,549, making it the #21 biggest city in 🇮🇪 Ireland, located in Ulster. Roughly 0.4% of Ireland's population lives here. It is about 45× smaller than Dublin, the country's biggest city.

Location of Letterkenny (capital Dublin shown for reference). Boundaries: Natural Earth.

Population (city proper)

22,549

Rank in Ireland

#21

Coordinates

54.95°N, 7.73°W

~8 m elevation · Europe/Dublin

Distance to capital (Dublin)

204 km

127 miles, straight line

Cities near Letterkenny

Sligo20,608 people · ~89 km away
Dundalk43,112 people · ~136 km away
Navan33,886 people · ~160 km away
An Muileann gCearr22,667 people · ~161 km away
Drogheda44,135 people · ~164 km away
Athlone22,869 people · ~170 km away

FAQ

What is the population of Letterkenny?

Letterkenny has a population of 22,549 (city proper, latest official figure via GeoNames), making it the #21 biggest city in Ireland.

What region is Letterkenny in?

Letterkenny is located in Ulster, Ireland.

Is Letterkenny the capital of Ireland?

No, the capital of Ireland is Dublin, about 204 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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