Figures are taken from Office for National Statistics (ONS) subnational population projections by persons, males and females, by single year of age. The latest subnational population projections available for England, published 24 May 2018, are full 2016-based and project forward the population from 2016 to 2041.
Long-term subnational population projections are an indication of the future trends in population by age and sex over the next 25 years. They are trend-based projections, which means assumptions for future levels of births, deaths and migration are based on observed levels mainly over the previous five years. They show what the population will be if recent trends continue.
The projections do not take into account any policy changes that have not yet occurred, nor those that have not yet had an impact on observed trends.
POPPI v11 April 2019
Crown copyright 2018