Mid-year population estimates for small areas within England and Wales are also published annually, approximately three months after the publication of national, regional and local authority level estimates.
The mid-year estimates refer to the population on 30 June of the reference year and are published annually. They are the official set of population estimates for the UK and its constituent countries, the regions of England and Wales and local authorities. This publication relates to mid-2011 and mid-2012 estimates of the UK. Population estimates for Northern Ireland are produced by Northern Ireland Statistics and Research Agency (NISRA) and for Scotland by National Records of Scotland (NRS).