Population Statistics and Demographics (PSD)

What information does this data area contain?

Mid-year population estimates data as produced and owned by the Office for National Statistics (ONS). Data is based on population data from the most recent census, currently the 2011 census. Estimates pre-2011 for SHA and Welsh LHB are still based on the 2001 census as ONS stopped producing these estimates in 2012. These estimates will not be updated based on the 2011 census.

All other levels of geography (country and districts) are rebased on the 2011 census back to 2002. The newly formed Clinical Commissioning Groups (CCGs) will appear on PSD with estimates back to 2002 based on the 2011 Census.

The database contains national level data for the four countries of the UK, and breakdowns for England by region, upper and lower tier Local Authority, as well as Clinical Commissioning Group (CCG). Wales is broken down by upper tier Local Authority, as well as Welsh Local Health Board Welsh LHB). Data is available by year, gender and both single year and quinary age groupings.

Full details of the methodologies used in producing population estimates can be found in the documents available from:


It currently contains data on the following:

  • PSD Estimates Population Count

How far back/in the future does the information go?

PSD Estimates go back to 1991.

How often is the information updated?

ONS update the information every year, with the release of data staggered depending on the geographical area covered.

Who can access it?

Access to this information is restricted to NHS and Department of Health staff with a valid business need.

NHS and Department of Health staff may request access to the data by calling the Health & Social Care Information Centre contact centre on 0300 303 5678 or emailing enquiries@nhsdigital.nhs.uk.

Access to standard population tables is available to everyone from the Office of National Statistics public website.

How can it be used?

Published data. Please see full Terms and Conditions for further information.

Need help?

Visit the help section or contact us:


0300 303 5678

Frequently Asked Questions

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