Top Countries — Africa

Egypt ranks fourth with 107.2 million people, 95% of whom live within 20 kilometers of the Nile River—a density that creates one of the world’s most concentrated populations. Its growth rate has slowed to 1.7% annually, below the sub-Saharan average of 2.7%, leading to a demographic slowdown compared to Nigeria’s 2.4% and Ethiopia’s 2.5%. Cairo alone houses 21 million residents, making it Africa’s largest city and a pressure point for housing and water. Egypt’s fertility rate of 3.3 births per woman is the lowest among the top four, signaling a gradual aging trend, though its median age of 24.1 years remains younger than Nigeria’s 18.1. The country’s GDP per capita of $4,000 tops the list, boosting economic output per person.

Tanzania leads Africa in population growth with an annual rate of 3.0%, outpacing South Africa’s 0.6% by a factor of five. Its 68.1 million people drive one of the continent’s fastest urbanization rates, as cities like Dar es Salaam expand at 5.6% annually. This demographic surge supports a dual economy where tourism generates $2.5 billion yearly and agriculture employs 65% of the workforce.

South Africa ranks sixth with 63.1 million people, yet its population growth of 0.6% is barely above replacement level — slower than the average African nation’s 2.4%. Despite this, it remains the continent’s most industrialized economy, contributing 18% of sub-Saharan Africa’s GDP. A concrete data point: the country generates 230 million tonnes of coal annually, fueling 85% of its electricity. Compared to Tanzania’s rapid expansion, South Africa’s demographic stability allows for more predictable urban planning, though unemployment at 32.9% keeps social pressures high.

The tech hub Nairobi drives youth migration, with 75% of the population under 35, fueling a $1 billion tech sector that grows 10% annually. This digital ecosystem is 30% faster than the Ethiopian average in startup formation, though urbanization strains water supplies where 40% of Nairobi lacks consistent access. Kenya’s mix of demographic youth and digital innovation keeps it firmly in the top ten.

Sudan’s 51.6 million population ranks it eighth — a surprise given ongoing conflict, demonstrating that war slows but does not halt demographic expansion. One concrete metric: 60% of the population is under 30, creating a youthful bulge that could either drive recovery or strain resources. Compared to South Africa’s sluggish growth, Sudan’s resilience shows that conflict alone does not curb numbers — but GDP per capita at $752 remains 75% lower than the sub-Saharan average.

Algeria dominates as Africa’s largest country by land area, spanning 2.38 million km², yet boasts the lowest population density in the top ten at just 19.9 people per km². This vast expanse supports 47.4 million residents, a figure that dwarfs Uganda's population by only 1.5 million despite being nearly 10 times larger. Compared to the runner-up in area, Algeria is 38% bigger than the second-largest country on the continent. Its geographic scale positions it as a key player in North African trade and energy, with natural gas exports exceeding $20 billion annually. The low density allows for significant agricultural potential, contrasting sharply with Uganda's crowded landscapes.

Driven by a median age of 16, one of the world's youngest populations, its annual growth rate of 3.3% surpasses the African average by 0.8 percentage points. This youthful demographic fuels rapid urbanization but strains infrastructure, with 48% of citizens under 15. In comparison to the runner-up in population, Uganda is 2.7% smaller yet covers 90% less land, highlighting extreme density challenges that require innovative agricultural solutions.