How the population changed in Westminster: Census 2021

The English region with the largest population increase was the East of England, which grew by around 8.3% or 488,000 more residents. The English region with the smallest increase was the North East, growing by 1.9% or around 50,000 people. In Wales, the population grew by 1.4% or 44,000 people.

In Westminster, the population size has decreased by 6.9%, from around 219,400 in 2011 to 204,300 in 2021. The total population of England grew by 6.6%, increasing by nearly 3.5 million to 56,489,800.

Nearby areas like City of London and Brent have seen their populations increase by around 16.6% and 9.2%, respectively, while others such as Kensington and Chelsea and Camden have seen decreases of 9.6% and 4.6%, respectively.

The largest population increases in London have been seen in Tower Hamlets and Barking and Dagenham, where the populations have grown by 22.1% and 17.7%, respectively.

At the other end of the scale, Kensington and Chelsea has seen a fall of 9.6%.

This is the opposite of the regional trend for London, where the population increased by 7.7%.

Tower Hamlets saw the largest percentage growth in population in England, increasing 22.1% between 2011 and 2021. Dartford was second, increasing 20.0%.

Some local authority areas have seen their populations decline. Kensington and Chelsea had an estimated population of 143,400 in 2021, which was around 15,200 fewer than in 2011 and a decrease of 9.6%.

The total population of local authority areas varies a lot, from Birmingham with around 1,144,900 people to the Isles of Scilly with around 2,100 people. The sizes of these circles are proportionate to the size of the population in each local authority area.

This population pyramid shows the population of males and females in each five-year age group at the time of the 2011 Census.
The largest age group in London back then was those aged 25 to 29 years.

More recently, in 2021, the largest age group in London was those aged 30 to 34 years.

In England, the largest age group in 2021 was people aged 30 to 34 years.

Overall, in England, there has been an increase of 20.1% in people aged 65 years and over, an increase of 3.6% in people aged 15 to 64 years, and an increase of 5.0% in children aged under 15 years.

This is how Westminster compares. There has been an increase of 0.8% in people aged 65 years and over, a decrease of 5.6% in people aged 15 to 64 years, and a decrease of 19.4% in children aged under 15 years.

The places that have seen the largest increases in the population aged 65 years and over are Milton Keynes in the South East, which has seen 43.6% growth, and Harborough in the East Midlands (38.5%).

The places that have seen the largest increases in the population aged under 15 years are Dartford in Kent, where the size of this age group increased by 31.8% between 2011 and 2021, and Peterborough in the East of England (23.8%).

The places that have seen the largest percentage decrease in the number of children aged under 15 years are Westminster (19.4%) and Kensington and Chelsea (17.8%) in London and Richmondshire in Yorkshire (12.3%).