Population estimates methodology

Methodology behind the Office for National Statistics' production of mid-year population estimates.

 Population Estimates by Ethnic Group Methodology

 Quarterly Population Estimates Methodology

 Making a population estimate in England and Wales (for local authority to national estimates)
An in-depth look at the methodology used to produce the mid-year population estimates.

 A Short Guide to Population Estimates (for local authority to national estimates) (pdf, 157Kb)
A shorter pdf summary of the guide 'Making a population estimate in England and Wales'.

 Methodology Note for production of population estimates for Lower Layer and Middle Layer Super Output Areas (pdf, 107Kb)

 Methodology Note for production of population estimates for National Parks, Parliamentary Constituencies, Primary Care Organisations and Wards (pdf, 943Kb)

 Population Estimates: A Race Impact Assessment (pdf, 39Kb)
The Office for National Statistics (ONS) is committed to assessing its statistical products for potential impacts upon race equality and to monitor policies for any potentially adverse impact on the promotion of race equality.

 Methodology note for adjusting Mid-year Population Estimates by Marital Status 2002 to 2007 for marriages abroad (pdf, 45Kb)

 Revisions

	Improved Methods for Population Statistics Revisions in 2007
	Local Authority Population Studies
	Other Changes to Mid-year Estimates (pdf, 71Kb)
	Methodology for Producing Revised Population Estimates for 1992 to 2000 (pdf, 18Kb)
	Revisions to the Population Estimates - September 2003
	Methodology Note for Mid-1982 to Mid-2000 Population Estimates revised in light of the 2001 Census - subject to revision (pdf, 134Kb)

 Research project

         Postcensal small area population estimates

         Project on Quarterly Population Estimates

 Other links

         Population estimates methodology archive

         Latest population estimates