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

United Kingdom vs Japan: population pyramids in 2030

2030Swap

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 2030, the United Kingdom has a population of 71.1 million and Japan 119.8 million; Japan is about 1.7 times the size of the United Kingdom.

The share aged 65 and over is 20.8% in the United Kingdom and 30.9% in Japan, 10.1 points higher in Japan. The median age is 41.7 years in the United Kingdom and 52.3 years in Japan.

The total fertility rate is 1.52 in the United Kingdom and 1.26 in Japan, both below the replacement level of about 2.1. Life expectancy at birth is 82.4 years in the United Kingdom and 85.7 years in Japan.

By 2050, the population of the United Kingdom is projected to grow by 6.0% and that of Japan to shrink by 12.3% compared with 2030.

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

Figures from 2024 are UN medium-variant projections.

Key figures (2030)

United KingdomJapan
Population71.1 million119.8 million
Aged 0–1415.9%10.5%
Aged 15–6463.3%58.6%
Aged 65+20.8%30.9%
Median age41.7 yrs52.3 yrs
Old-age dependency32.952.7
Total fertility rate1.521.26
Life expectancy82.4 yrs85.7 yrs
Population growth+0.44%-0.61%
Net migration (per year)+330,856+123,993
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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