Population of Ireland

As of April 2025, the population of Ireland is 5.1 million. The number of inhabitants has increased by 31 thousand in the last year, representing a growth of 0.62%. The median age of the population has increased in recent years, rising from 35.4 years in 2015 to 39 years in 2025. Currently, life expectancy at birth is 83.2 years and population density is 74.9 inhabitants per square kilometer.

Population Growth

The population growth rate of Ireland peaked in 2006, reaching around 3.08% annually, but has since declined to approximately 0.6% in 2025. The annual increase in the number of people has also decreased from a peak of around 130.65 thousand in 2006 to nearly 30.9 thousand in 2025.

Life Expectancy

In Ireland, life expectancy at birth has been increasing, with the indicator rising from 78.9 years in 2005 to 83.2 years in 2025, representing an increase of more than 4 years over the past 2 decades.

Most populous cities in Ireland

The cities of Ireland are mostly small, but 3 stand out with more than 100 thousand inhabitants. The most populous city is Dublin, Leinster, con una diferencia significativa sobre las demás, alcanzando approximately 1 million inhabitants. It is followed by South Dublin, Leinster with 278.7 thousand and Cork, Munster with 190.4 thousand.

These are the 20 most populous cities in Ireland: