Nigeria vs Tanzania

Tanzania and Nigeria are almost exactly the same size.

NigeriaTanzaniaNigeria moved onto Tanzania · Equal-area projection
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0.98×
Nigeria is 0.98× the area of Tanzania. Put the other way, Tanzania is 1.03× the size of Nigeria.
NigeriaTanzania
Size
AreaAbout the same area923,768 km²#31 of 194947,303 km²#30 of 194
CoastlineHas a coastHas a coast
Land neighbours48
People
PopulationNigeria: 3.37× the population237,527,782#6 of 194 · 202570,545,865#21 of 194 · 2025
DensityNigeria: 3.45× the density257 / km²#38 of 19474 / km²#111 of 194
Urban populationNigeria: 1.73× the urban share64%#93 of 192 · 202537%#156 of 192 · 2025
Fertility rateTanzania: 1.04× the births per woman4.38 per woman#15 of 192 · 20244.54 per woman#12 of 192 · 2024
Population growthTanzania: 0.80 points higher+2.06%#44 of 192 · 2025+2.86%#16 of 192 · 2025
Birth rateTanzania: 1.07× the birth rate32.5 per 1,000#20 of 192 · 202434.8 per 1,000#10 of 192 · 2024
Death rateNigeria: 2.04× the death rate11.6 per 1,000#20 of 192 · 20245.7 per 1,000#148 of 192 · 2024
Children under 15Tanzania: 1.8 points higher40.5%#19 of 192 · 202542.3%#13 of 192 · 2025
People over 65Nigeria: 0.1 points higher3.1%#166 of 192 · 20253.0%#171 of 192 · 2025
Net migrationNigeria: 0.1 per 1,000 higher−0.1 per 1,000#78 of 192 · 2025−0.2 per 1,000#84 of 192 · 2025
Refugees abroadNigeria: 100× the refugees for its size2.01 per 1,000#43 of 190 · 20250.02 per 1,000#145 of 190 · 2025
Health & education
Life expectancyTanzania: 12.6 years longer54.6 years#192 of 192 · 202467.2 years#151 of 192 · 2024
Infant mortalityNigeria: 2.43× the infant mortality69.8 per 1,000 births#2 of 191 · 202428.7 per 1,000 births#50 of 191 · 2024
DoctorsNigeria: 2.92× the doctors per person0.38 per 1,000#133 of 178 · 20230.13 per 1,000#164 of 178 · 2022
University enrolment—4.0%#143 of 145 · 2024
Human Development IndexNigeria: 0.005 higher0.560#161 of 190 · 20230.555#162 of 190 · 2023
Economy
GNI per capitaNigeria: 1.07× the income per person$1,360#159 of 185 · 2025$1,270#163 of 185 · 2025
GDPNigeria: 3.23× the economy$290.79B2025$90.14B2025
Income groupLower-middle incomeLower-middle income
GDP per capita (PPP)Nigeria: 2.13× the output per person$9,532#128 of 184 · 2025$4,471#157 of 184 · 2025
GDP growthTanzania: 1.9 points higher+4.0%#69 of 187 · 2025+5.9%#33 of 187 · 2025
InflationNigeria: 19.7 points higher+23.0%#10 of 176 · 2025+3.3%#81 of 176 · 2025
UnemploymentNigeria: 1.94× the unemployment3.1%#137 of 178 · 20251.6%#165 of 178 · 2025
Extreme povertyTanzania: 1.23× the share in extreme poverty41.8%#17 of 149 · 202251.3%#11 of 149 · 2018
Income inequality (Gini)Tanzania: 6.6 higher33.9#80 of 149 · 202240.5#35 of 149 · 2018
Jobs in agricultureTanzania: 31.1 points higher33.5% of jobs#52 of 178 · 202564.6% of jobs#10 of 178 · 2025
Jobs in industryNigeria: 8.9 points higher17.0% of jobs#113 of 178 · 20258.1% of jobs#164 of 178 · 2025
Jobs in servicesNigeria: 22.2 points higher49.5% of jobs#122 of 178 · 202527.3% of jobs#170 of 178 · 2025
Foreign investmentTanzania: 0.5 points higher1.4% of GDP#112 of 184 · 20251.9% of GDP#96 of 184 · 2025
Exports—19.0% of GDP#136 of 168 · 2025
Military spendingTanzania: 1.27× the military spending0.9% of GDP#119 of 155 · 20251.2% of GDP#104 of 155 · 2025
Internet usersNigeria: 1.32× the share online41%#153 of 184 · 202431%#165 of 184 · 2024
Mobile subscriptionsTanzania: 1.79× the mobile subscriptions71 per 100#157 of 191 · 2024127 per 100#59 of 191 · 2024
Energy & environment
Forest areaTanzania: 2.62× the forest share19% of land#122 of 192 · 202450% of land#51 of 192 · 2024
CO₂ per personNigeria: 1.84× the CO₂ per person0.57 t a year#146 of 185 · 20240.31 t a year#159 of 185 · 2024
Renewable energyNigeria: 2.0 points higher80.3%#16 of 190 · 202178.3%#20 of 190 · 2021
Access to electricityNigeria: 10.1 points higher62.5%#160 of 192 · 202452.4%#176 of 192 · 2024
Air pollution (PM2.5)Nigeria: 3.25× the air pollution65.7 µg/m³#4 of 191 · 202320.2 µg/m³#80 of 191 · 2023
Protected landTanzania: 26.0 points higher13.9% of land#124 of 191 · 202539.9% of land#9 of 191 · 2025
Arable landNigeria: 25.3 points higher40.8% of land#13 of 190 · 202415.5% of land#73 of 190 · 2024
Water stressTanzania: 1.34× the water stress9.7%#92 of 176 · 202213.0%#79 of 176 · 2022
PrecipitationNigeria: 1.07× the rain and snow1,150 mm#80 of 180 · 20221,071 mm#87 of 180 · 2022
Governance & safety
Political stabilityTanzania: 1.26 higher−1.74#179 of 193 · 2025−0.48#137 of 193 · 2025
Control of corruptionTanzania: 0.74 higher−1.07#158 of 193 · 2025−0.33#105 of 193 · 2025
Homicide rateNigeria: 4.24× the homicide rate15.7 per 100,000#20 of 146 · 20233.7 per 100,000#59 of 146 · 2020
State
StatusIndependent stateIndependent state
GovernmentPresidential republicfederal presidential republicPresidential republic
Member ofOPEC—
CapitalAbujaDodoma
CurrencyNigerian naira (NGN)Tanzanian shilling (TZS)
Official languagesEnglishEnglish, Swahili
Traffic drivesOn the rightOn the left
Time zoneUTC+1UTC+3
Calling code+234+255
RegionWestern Africa, AfricaEastern Africa, Africa

Area: Wikidata. Population, income, health, economy, environment and governance: World Bank. Human Development Index: UNDP. Government: CIA World Factbook. Ranks among the 194 independent states. All sources

Why the map you grew up with disagrees

On a Mercator map, area grows with distance from the equator. Nigeria sits at about 10° N and is stretched to 1.03× its true area; Tanzania at 6° S is stretched to 1.01×. Here the two are distorted about the same amount, so Mercator gets this pair roughly right. The figure above uses the Equal Earth projection, where every square kilometre is drawn the same size.

Questions about this pair

Is Nigeria bigger than Tanzania?
No. Nigeria and Tanzania are almost exactly the same size. Nigeria covers 923,768 km² and Tanzania covers 947,303 km².
How many times does Nigeria fit into Tanzania?
About 1.0 times: Tanzania has 1.03× the area of Nigeria.
Why do Nigeria and Tanzania look different on Google Maps?
Web maps use the Mercator projection, which stretches area with distance from the equator. Nigeria is drawn about 1.03× its true area there and Tanzania about 1.01×. For this pair the distortion is similar, so Mercator gets the comparison roughly right. Kartavera uses Equal Earth, where every square kilometre is drawn the same size.
Which has more people, Nigeria or Tanzania?
Nigeria: 237,527,782 people against 70,545,865. Density: Nigeria 257 per km², Tanzania 74 per km².
Which is richer, Nigeria or Tanzania?
By gross national income per person, Nigeria: $1,360 against $1,270 (World Bank, Atlas method, 2025) — 1.07× as much.
Where do people live longer, Nigeria or Tanzania?
In Tanzania: life expectancy at birth is 67.2 years, against 54.6 — 12.6 years longer (World Bank, 2024).
What kind of government do Nigeria and Tanzania have?
The same form of government, by constitution: presidential republic (CIA World Factbook).