Tanzania vs Vietnam
Vietnam has 1.4× the population of Tanzania: 101,598,527 vs 70,545,865, a gap of 31.1 million. Tanzania is growing faster (+2.86% vs +0.60% a year), adding about 2,014,190 people a year against +612,685. Using continuous exponential growth from the stated base year, if these rates held, Tanzania would overtake Vietnam in about 16 years (from the 2025 population bases, around 2041) — a projection, not a forecast. Vietnam is the older society: 9.5% aged 65+ against 3.0% in Tanzania, while Tanzania has more children (42.3% under 15 vs 22.9%). Vietnam is 4.3× as densely populated (320.2 vs 75.2 people per km²). People in Vietnam live 7.5 years longer on average (74.7 vs 67.2). GDP per capita is 3.8× higher in Vietnam ($5,066 vs $1,319).
Country/territory population bases: World Bank 2025 (Tanzania) and 2025 (Vietnam); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Tanzania vs Vietnam — side by side
 Tanzania |  Vietnam | |
|---|---|---|
| Population | 70,545,8652025 | 101,598,5272025 |
| Growth rate / yr | +2.86%2025 | +0.60%2025 |
| Births per 1,000 | 34.82024 | 13.42024 |
| Deaths per 1,000 | 5.72024 | 6.62024 |
| Children per woman | 4.542024 | 1.902024 |
| Life expectancy | 67.2 yrs2024 | 74.7 yrs2024 |
| Aged 0–14 | 42.3%2025 | 22.9%2025 |
| Aged 65+ | 3.0%2025 | 9.5%2025 |
| Density | 75.2 /km²2023 | 320.2 /km²2023 |
| Area | 947,300 km²2023 | 331,338 km²2023 |
| Urban population | 36.9%2025 | 38.8%2025 |
| Net migration / yr | -12,7302025 | -48,1712025 |
| GDP per capita | $1,3192025 | $5,0662025 |
| Country population rank (available records) | #21 | #16 |
| Base / world population (World Bank 2025) | 0.86% | 1.24% |
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). Tanzania: 7.1× from 1960 to 2025; Vietnam: 3.1× 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: Sub-Saharan Africa · East Asia & Pacific · rankings
Tanzania: Tanzania vs India, Tanzania vs China, Tanzania vs United States, Tanzania vs Indonesia, Tanzania vs Pakistan, Tanzania vs Nigeria, Tanzania vs Brazil, Tanzania vs Bangladesh.
Vietnam: Vietnam vs India, Vietnam vs China, Vietnam vs United States, Vietnam vs Indonesia, Vietnam vs Pakistan, Vietnam vs Nigeria, Vietnam vs Brazil, Vietnam vs Bangladesh.
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