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

Japan vs Thailand: population pyramids in 1951

1951Swap

JapanThailand

3%2%1%0%1%2%3%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 Thailand compared

In 1951, Japan has a population of 87.2 million and Thailand 20.7 million; Japan is about 4.2 times the size of Thailand.

The share aged 65 and over is 4.9% in Japan and 3.2% in Thailand, 1.7 points higher in Japan. The median age is 22.4 years in Japan and 18.5 years in Thailand.

The total fertility rate is 3.23 in Japan and 6.38 in Thailand, both above the replacement level of about 2.1. Life expectancy at birth is 61.0 years in Japan and 45.9 years in Thailand.

By 2050, the population of Japan is projected to grow by 20.5% and that of Thailand to grow by 221.4% compared with 1951.

GDP per person is $36K in Japan (2025) and $8,057 in Thailand (2025).

Key figures (1951)

JapanThailand
Population87.2 million20.7 million
Aged 0–1435.1%42.2%
Aged 15–6460.0%54.7%
Aged 65+4.9%3.2%
Median age22.4 yrs18.5 yrs
Old-age dependency8.25.8
Total fertility rate3.236.38
Life expectancy61.0 yrs45.9 yrs
Population growth+1.50%+2.63%
Net migration (per year)-54,567+9,294
GDP$4.44T (2025)$577B (2025)
GDP per person$36K (2025)$8,057 (2025)
Unemployment2.5% (2025)0.8% (2025)

Economic figures are the latest year published for each country.

Compare other years