Chad vs Zambia
Zambia has 4% more people than Chad: 21,913,874 vs 21,003,705, a gap of 910,169. Chad is growing faster (+3.41% vs +2.77% a year), adding about 716,671 people a year against +607,255. Using continuous exponential growth from the stated base year, if these rates held, Chad would overtake Zambia in about 7 years (from the 2025 population bases, around 2032) — a projection, not a forecast. Zambia is 1.8× as densely populated (27.9 vs 15.3 people per km²). People in Zambia live 11.3 years longer on average (66.5 vs 55.2). GDP per capita is 1.3× higher in Zambia ($1,318 vs $1,022).
Country/territory population bases: World Bank 2025 (Chad) and 2025 (Zambia); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
Chad vs Zambia — side by side
 Chad |  Zambia | |
|---|---|---|
| Population | 21,003,7052025 | 21,913,8742025 |
| Growth rate / yr | +3.41%2025 | +2.77%2025 |
| Births per 1,000 | 43.32024 | 32.72024 |
| Deaths per 1,000 | 11.12024 | 5.22024 |
| Children per woman | 6.032024 | 4.042024 |
| Life expectancy | 55.2 yrs2024 | 66.5 yrs2024 |
| Aged 0–14 | 46.0%2025 | 41.0%2025 |
| Aged 65+ | 2.1%2025 | 2.0%2025 |
| Density | 15.3 /km²2023 | 27.9 /km²2023 |
| Area | 1,284,000 km²2023 | 752,610 km²2023 |
| Urban population | 27.6%2025 | 45.9%2025 |
| Net migration / yr | -123,1042025 | +6,5622025 |
| GDP per capita | $1,0222025 | $1,3182025 |
| Country population rank (available records) | #63 | #61 |
| Base / world population (World Bank 2025) | 0.26% | 0.27% |
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). Chad: 6.9× from 1960 to 2025; Zambia: 6.9× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Region: Sub-Saharan Africa · rankings
Chad: Chad vs Malawi, Chad vs Zambia, Chad vs Sri Lanka, Chad vs Kazakhstan, Chad vs Chile, Chad vs Somalia.
Zambia: Zambia vs Mali, Zambia vs Burkina Faso, Zambia vs Malawi, Zambia vs Sri Lanka, Zambia vs Chad, Zambia vs Kazakhstan.
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