Sao Tome and Principe vs Tonga: Age dependency ratio
Sao Tome and Principe
70.6%
in 2025
Tonga
71.7%
in 2025
Sao Tome and Principe rank
38th
Tonga rank
35th
Age dependency ratio over time
- Sao Tome and Principe
- Tonga
How they compare
Tonga currently reports 71.7% against 70.6% in Sao Tome and Principe, a difference of 1.1%.
The two have swapped places 2 times across 66 shared years of data; in 1960 it was Tonga ahead.
Sao Tome and Principe ranks 38th and Tonga ranks 35th of 218 countries.
Across the 7 decades both report, Sao Tome and Principe averaged higher in 6 and Tonga in 1.
Head to head by decade
| Decade | Sao Tome and Principe | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 80.7% | 96.3% | 15.6% | Tonga |
| 1970s | 100.7% | 96.8% | 3.9% | Sao Tome and Principe |
| 1980s | 96.5% | 86.4% | 10.1% | Sao Tome and Principe |
| 1990s | 95.7% | 81.2% | 14.6% | Sao Tome and Principe |
| 2000s | 86.0% | 77.9% | 8.1% | Sao Tome and Principe |
| 2010s | 82.8% | 74.9% | 7.9% | Sao Tome and Principe |
| 2020s | 73.9% | 72.6% | 1.3% | Sao Tome and Principe |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher age dependency ratio, Sao Tome and Principe or Tonga?
- Tonga, at 71.7% against 70.6% in Sao Tome and Principe as of 2025.
- What is the difference in age dependency ratio between Sao Tome and Principe and Tonga?
- 1.1%, with Tonga ahead.
- How many years of comparable data are there for Sao Tome and Principe and Tonga?
- 66 years are reported by both, from 1960 to 2025.
- How do Sao Tome and Principe and Tonga rank globally for age dependency ratio?
- Sao Tome and Principe ranks 38th and Tonga ranks 35th of 218 countries.
- Where does this data come from?
- World Population Prospects, United Nations (UN), publisher: UN Population Division, published as Age dependency ratio (% of working-age population). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Age dependency ratio is the ratio of dependents--people younger than 15 or older than 64--to the working-age population--those ages 15-64. Data are shown as the proportion of dependents per 100 working-age population.