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Population - frequently asked questions

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Although population figures are generally thought of as geographic knowledge, they do not fall within the remit of ONS Geography and anyone contacting us for population information will be redirected elsewhere.

Here is some guidance:

Where can I get Census population figures?

The 2011 Census took place on 27 March 2011.

Currently ONS only have population data as at 2010 (mid year estimates) for the UK, but as the 2011 population data becomes available, it will be added to the website.

The following websites have population data, as well as further information and details of contact points:

  • Office for National Statistics (ONS): Census data for England and Wales

  • Neighbourhood Statistics (NeSS): Data for England and Wales down to Output Area level

  • National Records of Scotland (NRS): Census data for Scotland

  • Northern Ireland Statistics and Research Agency (NISRA): Census data for Northern Ireland

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How many people live in Portsmouth? (Mid-year population estimates)

Censuses only occur every ten years but annual mid-year population estimates are made in the interim.

Mid-2010 information is available on the ONS website for the UK; links to estimates for Scotland and Northern Ireland are also included.


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Other population information

A wide range of other population information is available on the population and migration theme pages of the ONS website.

If you still can't answer your query however then please contact either ONS, NRS or NISRA as appropriate.

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