Following the publication of 2021 Census estimates, NISRA population statistics carried out a rebasing exercise to revise the population estimates time series from 2012 to 2020 in line with the most recent Census 2021 population estimates.
The rebased time series up to 2021 was published on 29 June 2023. This was followed by the 2022 mid-year population and migration estimates for Northern Ireland and the 11 Local Government Districts rolled forward from Census 2021 on 31 August 2023. 2022 Mid-Year Population Estimates for Small Geographical Areas within Northern Ireland were published on 25 July 2024.
Publication of the 2023 mid-year population and migration estimates for Northern Ireland were published on 19 September 2024. The mid-year estimates now include estimates of those aged 85 and over, by single year of age up to 104 years, and for those aged 105 and over. This publication was updated to include 2023 population and migration estimates for the 11 Local Government Districts on 29 May 2025.