2020-based Interim Population Projections for Northern Ireland

National population projections by age and gender are produced every two years for the UK and each of the UK constituent countries by the Office for National Statistics (ONS) on behalf of the National Statistician and the Registrars General of Scotland and Northern Ireland. Principal Projections are produced based on long-term assumptions about future fertility, mortality and migration levels, with variant projections being produced from various alternative assumptions – usually in the form of high/low variants and their combinations. National population projections provide an estimate of the future size and age structure of the population of Northern Ireland. Population projections are widely used in policy development in areas such as housing, healthcare and education.

国家统计局（ONS）受国家统计师及苏格兰和北爱尔兰注册总长的委托，每两年对英国及其各组成国进行按年龄和性别划分的国民人口预测。主要预测基于对未来生育率、死亡率和移民水平的长期假设，而变体预测则基于各种不同的假设——通常以高低变体及其组合的形式呈现。国民人口预测提供了对北爱尔兰未来人口规模和年龄结构的估计。人口预测在住房、医疗和教育等政策制定领域得到广泛应用。