Land
Size, shape and altitude
How big is it, really?
Tanzania is 3% bigger than Nigeria.
Nigeria: 923,770 km² (2023) · Tanzania: 947,300 km² (2023)
How much coast is there?
Tanzania’s coastline is 67% longer than Nigeria’s.
Nigeria: 853 km (2026 edition) · Tanzania: 1,424 km (2026 edition)
How high can you climb?
Tanzania’s highest peak towers 3,476 m above Nigeria’s.
Nigeria: 2,419 m (2026 edition) · Tanzania: 5,895 m (2026 edition)
People
Who lives there, and how closely
How many people live there?
Nigeria has 3.4 times as many people as Tanzania.
Nigeria: 238 million (2025) · Tanzania: 70.5 million (2025)
How crowded is it?
Nigeria is 3.3 times as densely populated as Tanzania.
Nigeria: 261 per km² (2025) · Tanzania: 80 per km² (2025)
How tall are the men?
Men in Nigeria are 4.6 cm taller than in Tanzania.
Nigeria: 171.6 cm (2019) · Tanzania: 167 cm (2019)
How tall are the women?
Women in Nigeria are 1.3 cm taller than in Tanzania.
Nigeria: 158.1 cm (2019) · Tanzania: 156.9 cm (2019)
How old is the typical person?
The typical person in Nigeria is 0.51 years older than in Tanzania.
Nigeria: 17.8 years (2023) · Tanzania: 17.2 years (2023)
How many children per woman?
Women in Tanzania have 0.2 more children on average than in Nigeria.
Nigeria: 4.38 children per woman (2024) · Tanzania: 4.54 children per woman (2024)
How many people are 65 or older?
Nigeria and Tanzania are practically level.
Nigeria: 3.1% (2025) · Tanzania: 3% (2025)
How many Nobel laureates were born there?
Nigeria has produced 0.0 Nobel laureates per 10 million people, Tanzania 0.0.
Nigeria: 0 (2025) · Tanzania: 0 (2025)
How many official languages?
Tanzania has 2 official languages, Nigeria 1.
Nigeria: 1 (2026) · Tanzania: 2 (2026)
Money
What an economy looks like per person
How big is the economy?
Nigeria’s economy is 3.2 times the size of Tanzania’s.
Nigeria: $291 billion (2025) · Tanzania: $90.1 billion (2025)
How much is produced per person?
Nigeria produces 2.1 times as much per person as Tanzania.
Nigeria: Int$9,532 (2025) · Tanzania: Int$4,471 (2025)
How evenly is income shared?
Income is more unequally shared in Tanzania than in Nigeria (Gini 6.6 points higher).
Nigeria: 33.9 (2022) · Tanzania: 40.5 (2018)
How many people are looking for work?
Unemployment is 3.1% in Nigeria, versus 1.6% in Tanzania.
Nigeria: 3.1% (2025) · Tanzania: 1.6% (2025)
How much goes to the military?
Tanzania spends 1.2% of its GDP on the military, Nigeria 0.6%.
Nigeria: 0.6% (2024) · Tanzania: 1.2% (2024)
How expensive is it?
Tanzania’s price level (US = 100) is 2.3× Nigeria’s.
Nigeria: 13% (2025) · Tanzania: 29% (2025)
Health
Long lives, small beginnings
How much is spent on health?
Nigeria spends 84% more on health per person than Tanzania.
Nigeria: $67 (2023) · Tanzania: $36 (2023)
How long do people live?
People in Tanzania live 13 years longer than in Nigeria.
Nigeria: 54.6 years (2024) · Tanzania: 67.2 years (2024)
How many babies don’t reach their first birthday?
A baby in Nigeria is 2.4 times as likely to die before turning one as in Tanzania.
Nigeria: 69.8 per 1,000 (2024) · Tanzania: 28.7 per 1,000 (2024)
How many doctors are there?
Nigeria has 2.8 times as many doctors per person as Tanzania.
Nigeria: 0.4 per 1,000 (2023) · Tanzania: 0.1 per 1,000 (2022)
How common is obesity?
12% of adults in Nigeria are obese, versus 10% in Tanzania.
Nigeria: 12.1% (2024) · Tanzania: 10.5% (2024)
How many adults smoke?
7.7% of adults in Tanzania smoke, versus 3.1% in Nigeria.
Nigeria: 3.1% (2024) · Tanzania: 7.7% (2024)
Everyday life
Plates, glasses and happiness
How do people rate their lives?
People in Nigeria rate their lives 0.89 points higher than in Tanzania.
Nigeria: 4.79 (2025) · Tanzania: 3.90 (2025)
How much do people drink?
Adults in Nigeria drink 36% more alcohol than in Tanzania.
Nigeria: 2 litres (2023) · Tanzania: 1.5 litres (2023)
How much meat is on the menu?
Tanzania has 71% more meat per person than Nigeria.
Nigeria: 7.1 kg (2023) · Tanzania: 12.2 kg (2023)
How much food is there per day?
Tanzania has 48 kcal more food per person per day than Nigeria.
Nigeria: 2,470 kcal (2023) · Tanzania: 2,518 kcal (2023)
How long do people work?
Workers in Tanzania put in 67 more hours a year than in Nigeria.
Nigeria: 2,062 hours (2023) · Tanzania: 2,129 hours (2023)
How long do people go to school?
Adults in Nigeria went to school 1.5 years longer than in Tanzania.
Nigeria: 7.6 years (2023) · Tanzania: 6.1 years (2023)
How many tourists visit?
Tanzania welcomed 9.7 times as many tourists per resident as Nigeria (2019).
Nigeria: 0 (2024) · Tanzania: 0.02 (2022)
Connected
Online, electrified, urban
How many people are online?
41% of people in Nigeria are online, versus 31% in Tanzania.
Nigeria: 41% (2024) · Tanzania: 31% (2024)
Who has electricity at home?
63% of people in Nigeria have electricity, versus 52% in Tanzania.
Nigeria: 62.5% (2024) · Tanzania: 52.4% (2024)
How many live in cities?
64% of people in Nigeria live in cities, versus 37% in Tanzania.
Nigeria: 64% (2025) · Tanzania: 37% (2025)
How many phones per person?
Tanzania has 127 mobile subscriptions per 100 people, Nigeria 71.
Nigeria: 71 (2024) · Tanzania: 127 (2024)
How much railway is there?
Nigeria’s railway network is 31% longer than Tanzania’s.
Nigeria: 3,528 km (2015) · Tanzania: 2,701 km (2017)
How much do they fly?
Airlines from Tanzania fly 22% more passengers per resident than those from Nigeria.
Nigeria: 0.02 (2023) · Tanzania: 0.03 (2023)
Planet
Air, forests and energy
How much of the land is forest?
Forest covers 50% of Tanzania, but only 23% of Nigeria.
Nigeria: 23.2% (2023) · Tanzania: 50.1% (2023)
How much CO₂ does each person emit?
The average person in Nigeria emits 2 times as much CO₂ as someone in Tanzania.
Nigeria: 0.6 t (2024) · Tanzania: 0.3 t (2024)
How green is the power grid?
33% of Tanzania’s electricity is renewable, versus 31% in Nigeria.
Nigeria: 31.3% (2025) · Tanzania: 32.9% (2024)
How clean is the air?
The air in Nigeria carries 2 times as much fine dust as in Tanzania.
Nigeria: 50 µg/m³ (2024) · Tanzania: 24.6 µg/m³ (2024)
Safety
Measured risk, not vibes
How common is murder?
You are 4.2 times as likely to be murdered in Nigeria as in Tanzania.
Nigeria: 15.7 per 100k (2023) · Tanzania: 3.7 per 100k (2020)
How dangerous are the roads?
Roads in Nigeria are 9% deadlier than in Tanzania.
Nigeria: 17.2 per 100k (2021) · Tanzania: 15.8 per 100k (2021)
Climate
What the year feels like
How warm is it?
Nigeria is on average 4.3 °C warmer than Tanzania.
Nigeria: 27.4°C (2016–2025 avg) · Tanzania: 23.1°C (2016–2025 avg)
How much rain falls?
Tanzania gets 6% more rain than Nigeria.
Nigeria: 1,044 mm (2016–2025 avg) · Tanzania: 1,102 mm (2016–2025 avg)
Quick answers
Is Nigeria bigger than Tanzania?
Tanzania is larger. Tanzania is 3% bigger than Nigeria.
Which has more people, Nigeria or Tanzania?
Nigeria has 3.4 times as many people as Tanzania (2025 estimates).
Where do people live longer, Nigeria or Tanzania?
People in Tanzania live 13 years longer than in Nigeria. Life expectancy at birth is 54.6 years in Nigeria and 67.2 in Tanzania.
Are people taller in Nigeria or Tanzania?
Men in Nigeria are 4.6 cm taller than in Tanzania (NCD-RisC, cohort born 2019).
