At a glance
Nigeria vs Tanzania: 28 indicators side by side
| Indicator |  Nigeria |  Tanzania | Difference |
|---|---|---|---|
| 👥 Population | |||
| Population people | 243,860,821 | 73,151,180 | Nigeria 3.3× |
| Population growth rate % per year | +2 | +2.8 | -0.8 pts |
| Population density people per km² | 2642026 | 77.22026 | +186.8 |
| Surface area km² | 923,7702023 | 947,3002023 | Tanzania 1× |
| Birth rate births per 1,000 people | 32.52024 | 34.82024 | -2.3 |
| Death rate deaths per 1,000 people | 11.62024 | 5.72024 | +5.9 |
| Net migration rate per 1,000 people per year | 0 | -0.3 | +0.3 |
| Urban population % of population | 63.82025 | 36.92025 | +26.9 pts |
| Sex ratio males per 100 females | 102.5 | 98.4 | +4.1 |
| ❤️ Demographics & Health | |||
| Life expectancy years | 54.62024 | 67.22024 | -12.6 |
| Fertility rate births per woman | 4.382024 | 4.542024 | -0.16 |
| Median age years | 18.3 | 17.6 | +0.7 |
| Infant mortality deaths per 1,000 live births | 66.9 | 26.9 | +40 |
| Population under 15 % of population | 40.52025 | 42.32025 | -1.8 pts |
| Population aged 65+ % of population | 3.12025 | 32025 | +0 pts |
| 💰 Economy | |||
| GDP current US$ | $290.79B2025 | $90.14B2025 | Nigeria 3.2× |
| GDP per capita current US$ | $1,2242025 | $1,2782025 | Tanzania 1× |
| Unemployment rate % of labor force | 3.12025 | 1.62025 | +1.5 pts |
| Inflation rate % annual, consumer prices | 232025 | 3.32025 | +19.7 pts |
| 🌱 Environment & Energy | |||
| CO₂ emissions Mt CO₂ per year | 131.92024 | 21.342024 | Nigeria 6.2× |
| CO₂ emissions per capita tonnes per person | 0.572024 | 0.312024 | +0.26 |
| Energy use per capita kg of oil equivalent per person | 3202023 | 4012023 | Tanzania 1.3× |
| Renewable energy share % of final energy | 80.32021 | 78.32021 | +2 pts |
| Forest area % of land area | 23.22023 | 50.12023 | -26.8 pts |
| Freshwater resources per capita m³ per person per year | 9902022 | 1,2982022 | Tanzania 1.3× |
| Water stress % of resources withdrawn | 5.62022 | 6.22022 | -0.5 pts |
| 📶 Digital | |||
| Internet users % of population | 41.22024 | 31.22024 | +10 pts |
| Mobile subscriptions per 100 people | 70.82024 | 126.62024 | -55.8 |
▲ marks the higher value (for death rate, infant mortality, unemployment, inflation, CO₂ and water stress: the lower value). "Difference" is the ratio for absolute measures and Nigeria minus Tanzania for rates and shares. Years in grey are the latest available for that country.
Nigeria compared with Tanzania
Nigeria has a live population of about 243,860,821 (#6 in the world) and Tanzania about 73,151,180 (#21), so Nigeria has 3.3 times as many people as Tanzania. Nigeria is growing at 2% a year and Tanzania at 2.8%.
By area Tanzania is larger: 947,300 km² against 923,770 km², which gives population densities of 264 people per km² in Nigeria and 77.2 in Tanzania.
Nigeria's economy is worth $290.79B (2025) and Tanzania's $90.14B (2025); per person that is $1,224 in Nigeria versus $1,278 in Tanzania, so the average Tanzania resident produces 1 times as much.
Life expectancy is 54.6 years in Nigeria and 67.2 in Tanzania; women have 4.4 children on average in Nigeria compared with 4.5 in Tanzania; the median age is 18.3 versus 17.6 years.
63.8% of Nigeria's people live in cities against 36.9% in Tanzania; 41.2% use the internet in Nigeria and 31.2% in Tanzania; CO₂ emissions per person are 0.6 t in Nigeria and 0.3 t in Tanzania.
Population over time
Life expectancy & fertility
Birth & death rates
Age structure
CO₂ emissions
Energy use & renewables
Forest area
Urban population
Water resources & stress
Economy
Unemployment & inflation
Internet & mobile
Frequently asked questions
Which is bigger, Nigeria or Tanzania?
By population Nigeria is bigger: 243,860,821 people versus 73,151,180 (live estimates, October 2026). By area Tanzania is larger (947,300 km² vs 923,770 km²).
Which has the larger economy, Nigeria or Tanzania?
Nigeria: GDP of $290,794,361,542 versus $90,143,496,090 in current US dollars (World Bank, 2025/2025).
Where do people live longer, Nigeria or Tanzania?
Life expectancy at birth is 54.6 years in Nigeria and 67.2 years in Tanzania, a difference of 12.6 years in favour of Tanzania.
How are these comparisons calculated?
Live populations extrapolate the UN World Population Prospects baseline with each country's growth rate; every other figure is the latest value published by World Bank Open Data (or the UN for median age, infant mortality and migration). Each row shows the year of the figure, and the charts below overlay the full historical series of both countries.
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Tanzania vs FranceSources & method: live populations are linear extrapolations of the UN World Population Prospects estimates; all other indicators are the latest values from World Bank Open Data (UN WPP for median age, infant mortality, sex ratio and net migration). Figures are statistical estimates, not census counts. Page generated 2026-10-19. More about our data.