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

Japan vs United Kingdom: population pyramids in 2044

2044Swap

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 2044, Japan has a population of 109.3 million and the United Kingdom 74.4 million; Japan is about 1.5 times the size of the United Kingdom.

The share aged 65 and over is 36.3% in Japan and 23.6% in the United Kingdom, 12.7 points higher in Japan. The median age is 54.0 years in Japan and 43.4 years in the United Kingdom.

The total fertility rate is 1.32 in Japan and 1.54 in the United Kingdom, both below the replacement level of about 2.1. Life expectancy at birth is 87.6 years in Japan and 84.3 years in the United Kingdom.

By 2050, the population of Japan is projected to shrink by 3.9% and that of the United Kingdom to grow by 1.3% compared with 2044.

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

Figures from 2024 are UN medium-variant projections.

Key figures (2044)

JapanUnited Kingdom
Population109.3 million74.4 million
Aged 0–1410.8%14.9%
Aged 15–6452.8%61.5%
Aged 65+36.3%23.6%
Median age54.0 yrs43.4 yrs
Old-age dependency68.838.4
Total fertility rate1.321.54
Life expectancy87.6 yrs84.3 yrs
Population growth-0.65%+0.25%
Net migration (per year)+120,231+217,845
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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