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

Japan vs United Kingdom: population pyramids in 2015

2015Swap

JapanUnited Kingdom

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.

Japan and United Kingdom compared

In 2015, Japan has a population of 127.3 million and the United Kingdom 65.1 million; Japan is about 2.0 times the size of the United Kingdom.

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

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

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

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

Key figures (2015)

JapanUnited Kingdom
Population127.3 million65.1 million
Aged 0–1412.9%17.9%
Aged 15–6460.5%64.5%
Aged 65+26.6%17.7%
Median age46.6 yrs39.8 yrs
Old-age dependency43.927.4
Total fertility rate1.421.80
Life expectancy83.9 yrs80.9 yrs
Population growth-0.13%+0.80%
Net migration (per year)+168,896+347,839
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.

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