Indonesia vs Japan: Population by age group

Indonesia
19.82 million people
in 2023
Japan
36.65 million people
in 2023
Indonesia rank
7th
Japan rank
4th

Population by age group over time

  • Indonesia
  • Japan
010.0M20.0M30.0M40.0M195019862023

How they compare

Japan currently reports 36.65 million people against 19.82 million people in Indonesia, a difference of 16.83 million people.

That makes Japan's figure about 1.8 times Indonesia's.

Across all 74 years both countries report, Japan has been ahead every year.

Indonesia ranks 7th and Japan ranks 4th of 236 countries.

Japan has averaged higher in every one of the 8 decades both report.

Head to head by decade

Decade Indonesia Japan Difference Ahead
1950s 1.59 million people 4.80 million people 3.20 million people Japan
1960s 2.75 million people 6.36 million people 3.61 million people Japan
1970s 4.41 million people 8.88 million people 4.47 million people Japan
1980s 6.26 million people 12.40 million people 6.13 million people Japan
1990s 8.85 million people 18.12 million people 9.27 million people Japan
2000s 12.56 million people 25.61 million people 13.05 million people Japan
2010s 15.91 million people 33.35 million people 17.44 million people Japan
2020s 18.88 million people 36.57 million people 17.70 million people Japan

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population by age group, Indonesia or Japan?
Japan, at 36.65 million people against 19.82 million people in Indonesia as of 2023.
What is the difference in population by age group between Indonesia and Japan?
16.83 million people, with Japan ahead.
How many years of comparable data are there for Indonesia and Japan?
74 years are reported by both, from 1950 to 2023.
How do Indonesia and Japan rank globally for population by age group?
Indonesia ranks 7th and Japan ranks 4th of 236 countries.
Where does this data come from?
UN, World Population Prospects (2024) – processed by Our World in Data, published as Population by age group. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

About this data

Indicator
Population by age group
Unit
people
Source
UN, World Population Prospects (2024) – processed by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
236 places, 17,464 data points, 1950–2023
Last refreshed

The total population, measured on 1 July of the year shown. This only includes people aged 65+.