IDA total vs Japan: Population, total
IDA total
1.99 billion
in 2025
Japan
123.37 million
in 2025
IDA total rank
13th
Japan rank
12th
Population, total over time
- IDA total
- Japan
How they compare
IDA total currently reports 1.99 billion against 123.37 million in Japan, a difference of 1.86 billion.
That makes IDA total's figure about 16.1 times Japan's.
Across all 66 years both countries report, IDA total has been ahead every year.
IDA total ranks 13th and Japan ranks 12th of 47 groups.
IDA total has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | IDA total | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 445.15 million | 97.49 million | 347.66 million | IDA total |
| 1970s | 578.11 million | 110.42 million | 467.69 million | IDA total |
| 1980s | 756.88 million | 120.24 million | 636.65 million | IDA total |
| 1990s | 987.66 million | 125.22 million | 862.45 million | IDA total |
| 2000s | 1.27 billion | 127.67 million | 1.14 billion | IDA total |
| 2010s | 1.59 billion | 127.29 million | 1.46 billion | IDA total |
| 2020s | 1.89 billion | 124.82 million | 1.76 billion | IDA total |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher population, total, IDA total or Japan?
- IDA total, at 1.99 billion against 123.37 million in Japan as of 2025.
- What is the difference in population, total between IDA total and Japan?
- 1.86 billion, with IDA total ahead.
- How many years of comparable data are there for IDA total and Japan?
- 66 years are reported by both, from 1960 to 2025.
- How do IDA total and Japan rank globally for population, total?
- IDA total ranks 13th and Japan ranks 12th of 47 groups.
- Where does this data come from?
- World Population Prospects, United Nations (UN), published as Population, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Total population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship. The values shown are midyear estimates.