The Office of National Statistics (ONS) publish population projections based on mid-year population estimates and a set of assumptions about future fertility, mortality and migration. There is always a degree of uncertainty around population projections because there are many unknown factors.
Use the interactive population pyramid below to explore how the size and age structure of the population is projected to change between 2016 and 2041.
Type ‘Leeds’ in the search box and choose another area for comparison. Try locking the outline at 2016 and then moving forwards to 2026. Here are a few things to notice in the Leeds pyramid –
Increase in the population of teenagers.
The well-defined peak at age 69 in 2016 (and age 79 in 2026) is people born in 1946 after the Second World War.
The more sustained baby boom of the early 1960s can be seen in the big bulge around the 50-55 age group in 2016. This bulge moves into the over 60s age group in 2026.