Average age in Ireland 2026 — 38.8 yrs by county

Ireland is 6 years younger than the EU average — but that headline figure hides a 30-year local span. University EDs record a median age of 22; some rural western electoral divisions exceed 55. The data is below.

Ireland average age — Census 2022 overview

Areas with the oldest populations in Ireland

These electoral divisions recorded the highest average ages in Census 2022. Older-median EDs are concentrated in rural areas with population outflow — the rural west, midlands, and border regions where younger cohorts have emigrated or relocated to cities. Counties Leitrim, Roscommon, and Mayo consistently appear in the oldest-area rankings.

Areas with the youngest populations in Ireland

Electoral divisions with the lowest average ages in Census 2022. Young-median EDs cluster around university campuses, large new housing estates built in the 2000s and 2010s, and rapidly growing commuter-belt towns. Kildare, Meath, and Wicklow dominate the youngest county rankings.

Average age in Ireland by county — Census 2022

County-level average ages range from the mid-30s in fast-growing urban and commuter counties to the mid-40s in the rural west. The spread is driven by decades of selective outmigration — younger people leaving for Dublin and abroad, older cohorts remaining.

Why median age matters for area selection

Median age is a proxy for several factors that directly affect quality of life and service availability in any area:

• School catchments and family areas: younger-median EDs typically have more primary school places, family-oriented services, and new housing stock. Census 2022 shows a direct correlation between median age below 35 and higher proportions of households with children.
• Service demand and local economy: older-median EDs in rural areas often show declining local service provision — fewer shops, GPs, and schools as younger cohorts leave.
• Housing demand patterns: EDs with median age below 30 — often near universities or large new estates — show the highest rental pressure and lowest owner-occupancy rates.
• Population trajectory: An ED with a median age above 50 today is likely to experience population decline over the next decade as that cohort ages, absent new inward migration or housing development.

How Ireland's average age is changing

Ireland's median age rose from 36.1 at Census 2011 to 37.4 at Census 2016 to 38.8 at Census 2022 — a consistent pattern of gradual ageing. Despite this, Ireland remains one of the youngest countries in the EU. The EU27 average age is approximately 44.5 — six years above Ireland's national figure.

The ageing trend is uneven. Fast-growing counties — Kildare, Meath, Wicklow — have seen their average age fall or hold steady as new family housing absorbs younger in-movers. Rural western counties continue to age as younger cohorts leave and inward migration remains low.

The urban-rural age divide

Dublin's average age of approximately 36 contrasts with rural western counties where individual EDs exceed 55. This is not simply a rural-urban split — it reflects decades of outward migration from specific areas. The IrelandInsights map shows age distribution at the electoral division level, revealing within-county variation that county averages obscure.

University towns — Galway, Limerick, Cork, Maynooth, and parts of Dublin — record some of Ireland's youngest EDs. A university campus area in Galway might have an average age of 22; a rural ED in Mayo ten kilometres from the nearest town might record 54.

The 30-year local spread — from student EDs at 22 to western rural EDs above 55 — is a direct map of where Ireland's demographic momentum is concentrated and where it is absent. Kildare and Meath are growing younger; Mayo and Leitrim are not. The map makes the trajectory visible.

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