South Korea vs Sudan
South Korea has about the same population as Sudan: 51,684,564 vs 51,662,147, a gap of 22,417. Sudan is growing faster (+2.38% vs −0.13% a year), adding about 1,227,656 people a year against −66,458. Using continuous exponential growth from the stated base year, if these rates held, Sudan would overtake South Korea in about 0 years (from the 2025 population bases, around 2025) — a projection, not a forecast. South Korea is the older society: 20.3% aged 65+ against 3.4% in Sudan, while Sudan has more children (40.2% under 15 vs 10.2%). South Korea is 19.8× as densely populated (529.8 vs 26.8 people per km²). People in South Korea live 17.1 years longer on average (83.6 vs 66.5). GDP per capita is 31.1× higher in South Korea ($36,227 vs $1,165).
Country/territory population bases: World Bank 2025 (South Korea) and 2025 (Sudan); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
South Korea vs Sudan — side by side
 South Korea |  Sudan | |
|---|---|---|
| Population | 51,684,5642025 | 51,662,1472025 |
| Growth rate / yr | −0.13%2025 | +2.38%2025 |
| Births per 1,000 | 4.72024 | 33.02024 |
| Deaths per 1,000 | 7.02024 | 6.32024 |
| Children per woman | 0.752024 | 4.262024 |
| Life expectancy | 83.6 yrs2024 | 66.5 yrs2024 |
| Aged 0–14 | 10.2%2025 | 40.2%2025 |
| Aged 65+ | 20.3%2025 | 3.4%2025 |
| Density | 529.8 /km²2023 | 26.8 /km²2023 |
| Area | 100,450 km²2023 | 1,878,000 km²2023 |
| Urban population | 81.2%2025 | 34.9%2025 |
| Net migration / yr | +65,7312025 | +291,4692025 |
| GDP per capita | $36,2272025 | $1,1652025 |
| Country population rank (available records) | #29 | #30 |
| Base / world population (World Bank 2025) | 0.63% | 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). South Korea: 2.1× from 1960 to 2025; Sudan: 6.2× 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: East Asia & Pacific · Sub-Saharan Africa · rankings
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.
Sudan: Sudan vs India, Sudan vs China, Sudan vs United States, Sudan vs Indonesia, Sudan vs Pakistan, Sudan vs Nigeria, Sudan vs Brazil, Sudan vs Bangladesh.
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