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Recent Population Trends

Analysis of longer term demographic change in Swansea using the mid-year estimates of population.

Between each decennial Census, the Office for National Statistics (ONS) publish annual population estimates every June, relating to the previous year's mid-point.  The estimates are calculated by using the Census as a benchmark, and combining subsequent annual birth and death registrations data with estimates of internal (within UK) and international migration flows.

Since 2001, the estimates show successive annual increases in Swansea's population.  Between 2009 and 2019, the population of Swansea has increased by 11,400 or 4.8% (from 235,600 to 247,000), an average increase of approximately 1,100 people (0.5%) per year.  However, the rate of population growth has slowed in recent years. 

A PDF Document briefing note (PDF, 988KB)Opens new window is available which explores recent population change in Swansea in more detail, focusing on trends in the latest ten years (2009 to 2019).

Further information on the latest population estimates is included in the Population page.

Additional information on population and demography is available from the following web pages, including: 

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

Background note:

In September 2012, ONS published the mid-year population estimates for 2011 - the first to be based on the 2011 Census population estimates, rolled forward from 27 March 2011 (Census day) to 30 June 2011.  Local authority level mid-year population estimates for recent years have since been published by ONS around every June, with a time lag of around one year in each case; for example, the population estimates for mid-2012 (reference date: 30 June 2012) were published in June 2013, and so on.

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