United Kingdom recorded 52,800,000 people in 1961 and 66,978,000 in 2021, a change of +27%. Census figures compared side by side, every number sourced.
| Measure | 1961 | 2021 | Between | Change |
|---|---|---|---|---|
| Population | 52,800,000 | 66,978,000 | +27% | |
| Births per 1,000 people | 17.9 | 10.2 | −43% | |
| Child deaths before age 5 | 2.6% | 0.4% | −83% | |
| CO2 emissions per person | 11.1 | 5.06 | −55% | |
| Homicides per 100,000 people | n/a | 1.12 | n/a | |
| Infant deaths per 1,000 births | 22.5 | 3.90 | −83% | |
| Using the internet | n/a | 96.2% | n/a | |
| Life expectancy at birth | 70.9 yrs | 80.7 yrs | +14% | |
| UK population | 52,800,000 | 66,978,000 | +27% | |
| Red List Index of species survival | n/a | 0.96 | n/a | |
| Objects launched into space, running total | n/a | 509 | n/a | |
| Average temperature | 8.67°C | 9.28°C | +7.0% | |
| Living in urban areas | 78.4% | 83.0% | +5.9% | |
| Nuclear warheads held | 155 | 225 | +45% |