As of September 2023, the population of Ireland is estimated to be 5,056,935 people. This number includes both the Republic of Ireland and Northern Ireland, with approximately 5.1 million people living in the Republic of Ireland and 1.9 million living in Northern Ireland. According to a BBC News article, the population of the Republic of Ireland grew by almost 98,000 people in the past year, the biggest increase since 2008. The official figures suggested the population in April 2023 was 5,281,600, up from 5,184,000 in 2022. The UN estimates the July 1, 2023 population at 5,056,935.