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

Japan vs United Kingdom: population pyramids in 1975

1975Swap

JapanUnited Kingdom

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.

Japan and United Kingdom compared

In 1975, Japan has a population of 112.7 million and the United Kingdom 56.2 million; Japan is about 2.0 times the size of the United Kingdom.

The share aged 65 and over is 7.8% in Japan and 14.0% in the United Kingdom, 6.2 points higher in the United Kingdom. The median age is 30.6 years in Japan and 33.9 years in the United Kingdom.

The total fertility rate is 1.92 in Japan and 1.81 in the United Kingdom, both below the replacement level of about 2.1. Life expectancy at birth is 74.4 years in Japan and 72.7 years in the United Kingdom.

By 2050, the population of Japan is projected to shrink by 6.8% and that of the United Kingdom to grow by 34.1% compared with 1975.

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

Key figures (1975)

JapanUnited Kingdom
Population112.7 million56.2 million
Aged 0–1423.8%23.5%
Aged 15–6468.4%62.5%
Aged 65+7.8%14.0%
Median age30.6 yrs33.9 yrs
Old-age dependency11.422.4
Total fertility rate1.921.81
Life expectancy74.4 yrs72.7 yrs
Population growth+1.10%-0.02%
Net migration (per year)+107-40,241
GDP$4.44T (2025)$4T (2025)
GDP per person$36K (2025)$58K (2025)
Unemployment2.5% (2025)4.8% (2025)

Economic figures are the latest year published for each country.

Compare other years