Bangladesh vs South Korea
Bangladesh has 3.4× the population of South Korea: 175,686,899 vs 51,684,564, a gap of 124.0 million. Bangladesh is growing faster (+1.22% vs −0.13% a year), adding about 2,137,485 people a year against −66,458. At these source-year rates the modelled relative population gap is widening. South Korea is the older society: 20.3% aged 65+ against 6.7% in Bangladesh, while Bangladesh has more children (27.6% under 15 vs 10.2%). Bangladesh is 2.5× as densely populated (1,319.2 vs 529.8 people per km²). People in South Korea live 8.7 years longer on average (83.6 vs 74.9). GDP per capita is 13.9× higher in South Korea ($36,227 vs $2,597).
Country/territory population bases: World Bank 2025 (Bangladesh) and 2025 (South Korea); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Bangladesh vs South Korea — side by side
 Bangladesh |  South Korea | |
|---|---|---|
| Population | 175,686,8992025 | 51,684,5642025 |
| Growth rate / yr | +1.22%2025 | −0.13%2025 |
| Births per 1,000 | 20.02024 | 4.72024 |
| Deaths per 1,000 | 5.12024 | 7.02024 |
| Children per woman | 2.142024 | 0.752024 |
| Life expectancy | 74.9 yrs2024 | 83.6 yrs2024 |
| Aged 0–14 | 27.6%2025 | 10.2%2025 |
| Aged 65+ | 6.7%2025 | 20.3%2025 |
| Density | 1,319.2 /km²2023 | 529.8 /km²2023 |
| Area | 147,570 km²2023 | 100,450 km²2023 |
| Urban population | 33.2%2025 | 81.2%2025 |
| Net migration / yr | -402,1002025 | +65,7312025 |
| GDP per capita | $2,5972025 | $36,2272025 |
| Country population rank (available records) | #8 | #29 |
| Base / world population (World Bank 2025) | 2.14% | 0.63% |
Highlighted cell = the higher value (not "better"). Small print under each value is its own data year. Source: World Bank; country/territory population bases may have different years. These are not live counts.
Population since 1960
World Bank population history (not the separate UN WPP timeline). Bangladesh: 3.4× from 1960 to 2025; South Korea: 2.1× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Regions: South Asia · East Asia & Pacific · rankings
Bangladesh: Bangladesh vs India, Bangladesh vs China, Bangladesh vs United States, Bangladesh vs Indonesia, Bangladesh vs Pakistan, Bangladesh vs Nigeria, Bangladesh vs Brazil, Bangladesh vs Russia.
South Korea: South Korea vs India, South Korea vs China, South Korea vs United States, South Korea vs Indonesia, South Korea vs Pakistan, South Korea vs Nigeria, South Korea vs Brazil, South Korea vs Bangladesh.
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