Sao Tome and Principe Population Pyramid 2009
Year
2009Sao Tome and Principe in 2009
The population of Sao Tome and Principe in 2009 was 177,854. That is 24.9% more than in 1999, when the population stood at 142,442.
With a median age of 18.7 years, Sao Tome and Principe had a youth dependency ratio of 77.7 and an old-age dependency ratio of 7.0 per 100 people of working age. This is an expansive pyramid — each cohort of children is larger than the one above it, the signature of high birth rates and rapid growth.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
In 2023 women in Sao Tome and Principe had on average 3.64 children, above the replacement level of 2.1.
Source: World Bank World Development Indicators, latest available year.
A child born there in 2023 could expect to live 69.7 years on average (73.7 years for girls, 66.2 for boys).
Source: World Bank World Development Indicators, latest available year.
1,905 immigrants live in Sao Tome and Principe, 0.8% of the population.
| Cabo Verde | 1,115 |
| Angola | 292 |
| Gabon | 192 |
| Equatorial Guinea | 118 |
| Portugal | 95 |
41,433 people born in Sao Tome and Principe live in other countries.
| Portugal | 23,121 |
| Angola | 7,062 |
| Gabon | 7,058 |
| Equatorial Guinea | 1,936 |
| Cabo Verde | 1,893 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| Sao Tome and Principe | 177,854 | 18.7 | |
| Equatorial Guinea | 1,135,673 | 20.9 | |
| Gabon | 1,661,556 | 21.0 | |
| Congo | 4,281,219 | 19.7 | |
| Central African Republic | 4,529,047 | 16.9 |





