Japan vs Portugal: Age dependency ratio, old
Japan
51.0%
in 2025
Portugal
40.0%
in 2025
Japan rank
2nd
Portugal rank
3rd
Age dependency ratio, old over time
- Japan
- Portugal
How they compare
Japan currently reports 51.0% against 40.0% in Portugal, a difference of 11.0%.
That makes Japan's figure about 1.3 times Portugal's.
The two have swapped places 1 time across 66 shared years of data; in 1960 it was Portugal ahead.
Japan ranks 2nd and Portugal ranks 3rd of 218 countries.
Across the 7 decades both report, Japan averaged higher in 3 and Portugal in 4.
Head to head by decade
| Decade | Japan | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 9.3% | 13.6% | 4.3% | Portugal |
| 1970s | 11.5% | 16.5% | 5.0% | Portugal |
| 1980s | 15.1% | 18.8% | 3.7% | Portugal |
| 1990s | 20.8% | 22.1% | 1.3% | Portugal |
| 2000s | 30.4% | 25.6% | 4.8% | Japan |
| 2010s | 43.2% | 31.3% | 11.9% | Japan |
| 2020s | 50.2% | 37.9% | 12.3% | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher age dependency ratio, old, Japan or Portugal?
- Japan, at 51.0% against 40.0% in Portugal as of 2025.
- What is the difference in age dependency ratio, old between Japan and Portugal?
- 11.0%, with Japan ahead.
- How many years of comparable data are there for Japan and Portugal?
- 66 years are reported by both, from 1960 to 2025.
- How do Japan and Portugal rank globally for age dependency ratio, old?
- Japan ranks 2nd and Portugal ranks 3rd of 218 countries.
- Where does this data come from?
- World Population Prospects, United Nations (UN), publisher: UN Population Division, published as Age dependency ratio, old (% 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, old, is the ratio of older dependents--people 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.