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

United Kingdom vs Japan: population pyramids in 2015

2015Swap

United KingdomJapan

1%0.75%0.5%0.25%0%0.25%0.5%0.75%1%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 2015, the United Kingdom has a population of 65.1 million and Japan 127.3 million; Japan is about 2.0 times the size of the United Kingdom.

The share aged 65 and over is 17.7% in the United Kingdom and 26.6% in Japan, 8.9 points higher in Japan. The median age is 39.8 years in the United Kingdom and 46.6 years in Japan.

The total fertility rate is 1.80 in the United Kingdom and 1.42 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 80.9 years in the United Kingdom and 83.9 years in Japan.

By 2050, the population of the United Kingdom is projected to grow by 15.8% and that of Japan to shrink by 17.5% compared with 2015.

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

Key figures (2015)

United KingdomJapan
Population65.1 million127.3 million
Aged 0–1417.9%12.9%
Aged 15–6464.5%60.5%
Aged 65+17.7%26.6%
Median age39.8 yrs46.6 yrs
Old-age dependency27.443.9
Total fertility rate1.801.42
Life expectancy80.9 yrs83.9 yrs
Population growth+0.80%-0.13%
Net migration (per year)+347,839+168,896
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.

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