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Release: Population Estimates for UK, England and Wales, Scotland and Northern Ireland, Mid-2001 to Mid-2010 Revised

Released: 17 December 2013


Pete Large

Population Estimates Unit

Telephone: +44 (0)1329 444661

Categories: Population, Population Change, Population Estimates, Population Estimates by Age and Sex

Frequency of release: Ad-hoc

Language: English

Geographical coverage: UK

Geographical breakdown: Local Authority and County

  • The rebased population of the UK was estimated to be 62.8 million in mid-2010, up from the previously estimated figure of 62.3 million which was based on rolling forward the results of the 2001 Census. This represents a difference of 497,500 (0.8%) over the previous series estimates.

  • The rebased estimated populations of the four constituent countries of the UK in mid-2010 were 52.6 million people in England, 5.3 million in Scotland, 3.0 million in Wales and 1.8 million in Northern Ireland.

  • The population of the UK aged 65 and over increased by 0.9 million between mid-2001 and mid-2010.  The population in this age group represented 16.4% of the total UK population in mid-2010, up from 15.9% in mid-2001. The fastest period of growth in this increase was between mid-2009 and mid-2010.

  • The population increase of  the UK in the period mid-2001 to mid-2010 was caused by there being 1.4 million more births than deaths (38% of the increase) and 2.1 million more international migrants arriving than emigrants leaving (56% of the increase).

  • Over the period mid-2001 to mid-2010 the rebased estimated flow of international migrants to the UK was highest in the year to mid-2007 at 685,500. The highest estimated outflow for the period was during the year to mid-2009 at 407,500 emigrants.

Estimates of the usually resident population as at 30 June of the reference year. The Population Estimates reflect the administrative boundaries that were in place on 30 June 2012.

 Supporting Material

Population estimates for local authorities across UK constituent countries: a comparison of data sources and methods (100.8 Kb Pdf)

Mid-year population estimates – age distribution errors

We have recently been made aware of errors mainly affecting the age distribution of the mid-year population estimates for Scotland for the years 2002 to 2014. These errors only affect areas within Scotland; population estimates for England, Wales and Northern Ireland are unaffected. Whilst the estimated age distribution of the UK population is affected for the period, the total estimates of the UK population remain valid. ONS have published Frequently Asked Questions (158.6 Kb Pdf) that provide further information on the errors.

ONS plans to publish corrected UK population estimates for the years 2012 to 2014 incorporating corrected estimates for Scotland in April 2016.


Mid-1981 Population Estimates

Mid-1982 to Mid-1990 Population Estimates

Mid-1991 to Mid-2000 Population Estimates

Mid-2011 and Mid-2012 Population Estimates

These National Statistics are produced to high professional standards and released according to the arrangements approved by the UK Statistics Authority.

Content from the Office for National Statistics.
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