As of midyear 2020, Tanzania had a population of 59.7 million, annual population growth rate of 3.1%, and 44% of Tanzania’s population was under age 15. The Total Fertility Rate, or the average number of children per woman over the course of her lifetime, has declined from 6.2, to 5.2 in 2015, and to 4.9 children per women in 2019. To realize a demographic dividend, fertility will have to continue to decline in Tanzania. Combined with the right investments in health, education, and job creation, a decline in fertility could open a window of opportunity for economic growth.

Tanzania Development Data

Snapshot of the enabling environment for a demographic dividend
Economic Indicators

Percent of Population living on less than $1.9 per day (2017): 49.1%
Annual GDP Growth rate: 5.8%
GINI Index: 40.5

Demographic Indicators

Total Fertility Rate: 4.9 children per woman
Percent of Population Under 15: 44%
Dependency Ratio: 87 dependents per 100 working age adult

Health Indicators

Life Expectancy: 65.0 years (Males: 63.2 years ; Females: 66.8 years)
Infant Mortality: 40 deaths per 1,000 live births
Contraceptive Prevalence Rate (all methods): 38%

Education Indicators

World bank education indicators (2018)
Pre-primary net enrollment: 41%
Primary education net enrollment: 81%
Proportion completing primary: 68.7%
Net enrollment in secondary education: 26.5%
Gross enrollment in tertiary education: 4%
Adult literacy rate (+15 years): 78% 

Completed Primary School or Higher
Among Men ages 15-19: 67.3%
Among Men ages 20-24: 79.2%
Among Women ages 15-19: 71%
Among Women ages 20-24: 79%

Completed Secondary School or Higher
Among Men ages 20-24: 29.3%
Among Women ages 20-24: 27%
Median schooling for males ages 15-49: 6.5 years
Median schooling for females ages 15-49: 6.3 years

Governance Indicators

Political Stability: -0.56
Government Effectiveness: -0.76
Global Competitiveness Index: 48.2

Population pyramids can be used to show change to age structure over time as well as projected changes to age structure in the future. Looking at Tanzania’s population pyramids, change to the age structure is evident starting at “Tanzania 2030”.

Tanzania’s population pyramids from 1970 to 2010 reveal only a slight narrowing at the base of the pyramid. Indeed, between 1970 and 2010, fertility did decline from 6.8 children per woman to 5.4 children per woman. However, Tanzania’s population age structure hasn’t changed significantly in the last 40 years, total fertility rates remain high and, in general, each working age adult supports several dependents. Desired family size remains large in Tanzania, with men and women, on average, wishing to have a family of nearly 5 children. “Tanzania 2030” shows more noticeable narrowing of the bottom of the pyramid, based on United Nations projections that assume a decline in total fertility to 4.2 children per woman over her lifespan. “Tanzania 2050” shows further narrowing of the base of the population pyramid, based on the assumption that fertility will decline further to 3.3 children per woman. In this 2050 scenario, Tanzania would have a larger proportion of the population working-age and, if able to secure employment, able to contribute to economic growth.

Chart by Visualizer

45% of Tanzania’s population is under age 15

Working Towards a Demographic Dividend in Tanzania

If Tanzania makes substantial investments in reproductive health and family planning, then fertility levels may begin to decline more significantly, and children will be more likely to achieve better basic levels of health. With additional investments in health and education and economic initiatives to facilitate job creation, Tanzania may be able to experience the rapid economic growth known as a demographic dividend. There is some ongoing work on the topic of a demographic dividend in Tanzania.


Population Reference Bureau, 2019 World Population Data Sheet, (Washington, DC: Population Reference Bureau, 2019).

United Nations Population Division, World Population Prospects: The 2012 Revision, (New York: United Nations, 2013).

World Bank Group. (2019) World DataBank. Retrieved from http://databank.worldbank.org/data/home.aspx

Education statistics were taken from 2015-2016 Tanzania Demographic and Health Survey.

World Bank Group. (2014) Worldwide Governance Indicators. Retrieved from http://info.worldbank.org/governance/wgi/index.aspx#home

World Economic Forum, Global Competitiveness Report 2014-2015, (Geneva: Switzerland, 2014).


Gini index measures the extent to which the distribution of income or consumption expenditure among individuals or households within an economy deviates from a perfectly equal distribution. Thus a Gini index of 0 represents perfect equality, while an index of 100 implies perfect inequality.

Dependency ratio is the ratio of dependents–people younger than 15 or older than 64–to the working-age population–those ages 15 to 64. Although each country’s experience is different, countries that have realized a demographic dividend typically have a dependency ratio of less than 50 dependents for every 100 working-age adults.

Worldwide Governance Indicators are measured on a scale from -2.5 to +2.5. The closer to 2.5 the rating is, the stronger the governance. Government Effectiveness is a composite governance indicator with data from multiple sources. Political stability and Absence of Violence/Terrorism is a composite governance indicator with data from multiple sources More information on methodology available at: http://info.worldbank.org/governance/wgi/index.aspx#home

Global Competitiveness Index defines competitiveness as the set of institutions, policies and factors that determine the level of productivity of a country. The level of productivity, in turn, sets the level of prosperity that can be earned by an economy. The different aspects of competitiveness are captured in 12 pillars, ranging from institutional strength to market size. http://reports.weforum.org/global-competitiveness-report-2014-2015/