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Statistics on population and households - official population estimates, recent trends, small area data, density, population characteristics, household estimates, population and household projections, Swansea Demographic Profile.

The latest official estimate of the population of the City and County of Swansea stands at 246,500 (mid-2018, Office for National Statistics / ONS).  Swansea has the second highest population of the 22 Welsh local authorities, representing almost 8% of the total population of Wales (3,138,600).

Further information on the 2018 population statistics for Swansea, including breakdowns by age and sex, data for other local authorities, Wales and UK, and the most recent trends (2017-18), is available in a PDF Document briefing note* (PDF, 1MB)Opens new window on this page.  The mid-2018 population by single year of age Excel Document data for Swansea (Excel, 58KB)Opens new window is also available.

Between 2017 and 2018, Swansea's estimated population increased by approx. 1,000 (+0.4%).  This is in line with the average increase across Wales and the 11th highest annual growth rate (%) of Wales' 22 authorities.  Analysis of the supporting data released with the estimates suggests that Swansea's population growth during the year to June 2018 was mainly from net international in-migration (+1,400 approx.), partly offset by negative natural change (ie approx. 240 more deaths than births in the year), and internal (UK-based) migration (-170 net).

More detailed information on population and demography is included in the following pages: 

A broad range of statistics on population and household characteristics are also available via our 2011 Census pages.  In some cases the Census remains the most appropriate data source.

This page also includes the PDF Document Swansea Demographic Profile (PDF, 964KB)Opens new window.  This summary report provides a statistical overview of the city and county, including Swansea's population by age, recent (and projected) change and household composition; together with background information on a range of population characteristics, including ethnicity, Welsh language, general health and economic activity.  It was updated in July 2019.

If you have further enquiries regarding population statistics in Swansea, please contact us.

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