Age composition in 2026:
| United Kingdom | Iceland | |
|---|---|---|
| Young Population | 16.72%11,693,284 | 17.31%69,657 |
| Working Age Population | 63.34%44,295,443 | 66.39%267,125 |
| Elderly Population | 19.94%13,942,801 | 16.29%65,550 |
In 2026, the median age is 41.2 years in United Kingdom and 37.6 years in Iceland.United Kingdom already reached Icelandโs current median age in 2000, about 26 years ahead in population aging.
The total population of United Kingdom peaks in 2072 at 76,068,380.The total population of Iceland peaks in 2049 at 432,999.
By 2050, the dependency ratio of United Kingdom will be 65.9%, and 24.68% of the population will be elderly.By 2050, the dependency ratio of Iceland will be 60.2%, and 23.94% of the population will be elderly.
| United Kingdom | Iceland | ||
|---|---|---|---|
| Demographic dividend (dependency ratio below 50%) | 1950 | 2006โ2011 2018โ2020 |
|
| Aging society (65+ reaches 7%) | 1950 or earlier | 1950 or earlier | |
| Aged society (65+ reaches 14%) | 1975 | 2017 42 years later | |
| Super-aged society (65+ reaches 20%) | 2027 | 2038 11 years later |