Ireland's population is estimated by the United Nations to be 5.1 million in 2021.
The population of Ireland grew at 0.9% in the last year and is ranked the 25th most populated country in Europe, ahead of Croatia.
Ireland last conducted a national census in 2022 and 100% of births in Ireland are recorded. Read more from the World Econcomics Population Data Quality Ratings and see how Ireland compares to other countries around the world and in the Europe region.
Ireland's data is highlighted in the table below, use the filter and sort order options to allow easy comparison with other countries.
Data source: United Nations, Washington D.C., Eurostat, Luxembourg and World Economics Research, London