World Population PyramidsPopulation pyramids and indicators by country and year日本語

United Kingdom vs Japan: population pyramids in 1951

1951Swap

United KingdomJapan

1.5%1%0.5%0%0.5%1%1.5%0102030405060708090100MaleFemale

Each bar is the share of the total population at that single year of age (men left, women right), so countries of different sizes can be compared.

United Kingdom and Japan compared

In 1951, the United Kingdom has a population of 50.3 million and Japan 87.2 million; Japan is about 1.7 times the size of the United Kingdom.

The share aged 65 and over is 10.9% in the United Kingdom and 4.9% in Japan, 6.0 points higher in the United Kingdom. The median age is 34.9 years in the United Kingdom and 22.4 years in Japan.

The total fertility rate is 2.19 in the United Kingdom and 3.23 in Japan, both above the replacement level of about 2.1. Life expectancy at birth is 68.2 years in the United Kingdom and 61.0 years in Japan.

By 2050, the population of the United Kingdom is projected to grow by 49.9% and that of Japan to grow by 20.5% compared with 1951.

GDP per person is $58K in the United Kingdom (2025) and $36K in Japan (2025).

Key figures (1951)

United KingdomJapan
Population50.3 million87.2 million
Aged 0–1422.5%35.1%
Aged 15–6466.6%60.0%
Aged 65+10.9%4.9%
Median age34.9 yrs22.4 yrs
Old-age dependency16.38.2
Total fertility rate2.193.23
Life expectancy68.2 yrs61.0 yrs
Population growth+0.14%+1.50%
Net migration (per year)-93,691-54,567
GDP$4T (2025)$4.44T (2025)
GDP per person$58K (2025)$36K (2025)
Unemployment4.8% (2025)2.5% (2025)

Economic figures are the latest year published for each country.

Compare other years