Japan vs Sierra Leone: Age dependency ratio
Japan
70.2%
in 2025
Sierra Leone
69.3%
in 2025
Japan rank
41st
Sierra Leone rank
44th
Age dependency ratio over time
- Japan
- Sierra Leone
How they compare
Japan currently reports 70.2% against 69.3% in Sierra Leone, a difference of 0.9%.
The two have swapped places 1 time across 66 shared years of data; in 1960 it was Sierra Leone ahead.
Japan ranks 41st and Sierra Leone ranks 44th of 218 countries.
Sierra Leone has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Japan | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 47.8% | 75.5% | 27.7% | Sierra Leone |
| 1970s | 46.0% | 82.8% | 36.8% | Sierra Leone |
| 1980s | 46.8% | 86.8% | 40.0% | Sierra Leone |
| 1990s | 43.8% | 89.0% | 45.2% | Sierra Leone |
| 2000s | 51.4% | 89.2% | 37.8% | Sierra Leone |
| 2010s | 64.4% | 82.1% | 17.8% | Sierra Leone |
| 2020s | 70.1% | 72.3% | 2.1% | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher age dependency ratio, Japan or Sierra Leone?
- Japan, at 70.2% against 69.3% in Sierra Leone as of 2025.
- What is the difference in age dependency ratio between Japan and Sierra Leone?
- 0.9%, with Japan ahead.
- How many years of comparable data are there for Japan and Sierra Leone?
- 66 years are reported by both, from 1960 to 2025.
- How do Japan and Sierra Leone rank globally for age dependency ratio?
- Japan ranks 41st and Sierra Leone ranks 44th 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.