Nigeria vs Tanzania
Nigeria vs Tanzania: Safe drinking water
Safe drinking water in 2022: 29% in Nigeria and 11.3% in Tanzania, by WHO/UNICEF estimates. In 2022 the value was higher in Nigeria, by 17.6 percentage points, or 2.56 times that in Tanzania.
% of people · WHO/UNICEF
What the numbers say
- Nigeria has been higher in every year both have figures for since 2000.
- In 2022, Nigeria ranked 117 and Tanzania ranked 131 of 135 countries, counting from the highest.
- The world as a whole: 72.9% in 2022.
Every year
% of people · WHO/UNICEF
| Year | Nigeria | Tanzania | World |
|---|---|---|---|
| 2022 | 29 | 11.3 | 72.9 |
| 2021 | 28.4 | 11 | 72.5 |
| 2020 | 27.9 | 10.7 | 72.3 |
| 2019 | 27.3 | 10.4 | 71.7 |
| 2018 | 26.7 | 10.1 | 71 |
| 2017 | 26.1 | 9.8 | 70.4 |
| 2016 | 25.6 | 9.5 | 69.7 |
| 2015 | 25 | 9.2 | 69.1 |
| 2014 | 24.4 | 8.9 | 68.4 |
| 2013 | 23.8 | 8.6 | 67.7 |
| 2012 | 23.2 | 8.3 | 67.1 |
| 2011 | 22.2 | 8 | 66.4 |
| 2010 | 21.2 | 7.8 | 65.9 |
| 2009 | 20.2 | 7.5 | 65.4 |
| 2008 | 19.2 | 7 | 64.9 |
| 2007 | 18.2 | 5.5 | 64.6 |
| 2006 | 17.3 | 3.8 | 64 |
| 2005 | 16.4 | 3 | 63.7 |
| 2004 | 15.5 | 2.3 | 63 |
| 2003 | 14.6 | 1.6 | 62.4 |
| 2002 | 13.8 | 1.5 | 61.8 |
| 2001 | 13 | 1.5 | 61.1 |
| 2000 | 12.6 | 1.4 | 60.8 |
Each country on its own
Good to know
- The share of people whose drinking water comes from an improved source at home, there when needed and free of contamination.
- Source: WHO/UNICEF Joint Monitoring Programme, via Our World in Data.
- Ranks count the 135 countries with a value in 2022, highest first.
- The faint line is the world as a whole, as the same source counts it.
How the layers work, where their data comes from and what they can’t tell you: Countries through time
Nigeria vs Tanzania
Health
- Life expectancyNigeria: 54.5 years in 2023Tanzania: 67 years in 2023
- Child mortalityNigeria: 11.6 per 100 live births in 2024Tanzania: 3.7 per 100 live births in 2024
- Infant mortalityNigeria: 69.5 per 1,000 live births in 2023Tanzania: 28.9 per 1,000 live births in 2023
- DepressionNigeria: 3.92% in 2017Tanzania: 3.69% in 2017
- Suicide rateNigeria: 7.5 per 100,000 people in 2017Tanzania: 8.8 per 100,000 people in 2017
People
- PopulationNigeria: 228 million people in 2023Tanzania: 66.6 million people in 2023
- Population growthNigeria: 2.1% a year in 2023Tanzania: 2.88% a year in 2023
- Fertility rateNigeria: 4.48 births per woman in 2023Tanzania: 4.61 births per woman in 2023
- Urban populationNigeria: 63.8% in 2025Tanzania: 36.9% in 2025
- Median ageNigeria: 17.8 years in 2023Tanzania: 17.2 years in 2023
- People aged 65 and overNigeria: 3% in 2023Tanzania: 3% in 2023
- Net migration rateNigeria: -0.3 per 1,000 people in 2023Tanzania: -0.6 per 1,000 people in 2023
Economy
Education
Politics
Conflict
Military
- Military spendingNigeria: 0.91% of GDP in 2025Tanzania: 1.16% of GDP in 2025
- Military spending in US dollarsNigeria: $1.76B in 2025Tanzania: $983M in 2025
- Military spending per personNigeria: $9 in 2025Tanzania: $15 in 2025
- Military share of state spendingNigeria: 5.9% of government spending in 2025Tanzania: 5.8% of government spending in 2025
- Armed forces personnelNigeria: 223,000 people in 2020Tanzania: 28,000 people in 2020
- National powerNigeria: 1.16% of world capability in 2022Tanzania: 0.25% of world capability in 2022
- Armed forces, share of workersNigeria: 0.23% of the labour force in 2020Tanzania: 0.1% of the labour force in 2020
- Arms importsNigeria: 21 million TIV in 2025Tanzania: 4 million TIV in 2025