Iran vs Japan: Population by world region
Iran
80.05 million people
in 2100
Japan
76.85 million people
in 2100
Iran rank
30th
Japan rank
32nd
Population by world region over time
- Iran
- Japan
How they compare
Iran currently reports 80.05 million people against 76.85 million people in Japan, a difference of 3.20 million people.
The two have swapped places 1 time across 318 shared years of data; in 1000 it was Japan ahead.
Iran ranks 30th and Japan ranks 32nd of 238 countries.
Across the 48 decades both report, Iran averaged higher in 5 and Japan in 43.
Head to head by decade
| Decade | Iran | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1000s | 4.50 million people | 6.00 million people | 1.50 million people | Japan |
| 1100s | 4.75 million people | 6.20 million people | 1.45 million people | Japan |
| 1200s | 5.00 million people | 6.40 million people | 1.40 million people | Japan |
| 1300s | 3.50 million people | 7.30 million people | 3.80 million people | Japan |
| 1400s | 3.75 million people | 9.30 million people | 5.55 million people | Japan |
| 1500s | 4.00 million people | 12.30 million people | 8.30 million people | Japan |
| 1600s | 5.00 million people | 17.00 million people | 12.00 million people | Japan |
| 1700s | 5.00 million people | 26.70 million people | 21.70 million people | Japan |
| 1710s | 5.21 million people | 29.00 million people | 23.79 million people | Japan |
| 1720s | 5.32 million people | 29.00 million people | 23.68 million people | Japan |
| 1730s | 5.43 million people | 29.00 million people | 23.57 million people | Japan |
| 1740s | 5.55 million people | 29.00 million people | 23.45 million people | Japan |
| 1750s | 5.67 million people | 29.00 million people | 23.33 million people | Japan |
| 1760s | 5.79 million people | 28.80 million people | 23.01 million people | Japan |
| 1770s | 5.91 million people | 28.60 million people | 22.69 million people | Japan |
| 1780s | 6.03 million people | 28.40 million people | 22.37 million people | Japan |
| 1790s | 6.16 million people | 28.20 million people | 22.04 million people | Japan |
| 1800s | 6.12 million people | 28.65 million people | 22.53 million people | Japan |
| 1810s | 6.40 million people | 30.15 million people | 23.74 million people | Japan |
| 1820s | 6.69 million people | 31.14 million people | 24.44 million people | Japan |
| 1830s | 7.00 million people | 31.48 million people | 24.48 million people | Japan |
| 1840s | 7.32 million people | 31.82 million people | 24.50 million people | Japan |
| 1850s | 7.71 million people | 32.56 million people | 24.85 million people | Japan |
| 1860s | 8.18 million people | 33.81 million people | 25.63 million people | Japan |
| 1870s | 8.60 million people | 35.60 million people | 27.01 million people | Japan |
| 1880s | 8.91 million people | 38.42 million people | 29.50 million people | Japan |
| 1890s | 9.55 million people | 42.08 million people | 32.53 million people | Japan |
| 1900s | 10.58 million people | 46.80 million people | 36.22 million people | Japan |
| 1910s | 10.22 million people | 52.69 million people | 42.47 million people | Japan |
| 1920s | 10.74 million people | 59.97 million people | 49.23 million people | Japan |
| 1930s | 13.86 million people | 68.59 million people | 54.73 million people | Japan |
| 1940s | 15.87 million people | 78.34 million people | 62.47 million people | Japan |
| 1950s | 18.55 million people | 91.55 million people | 73.00 million people | Japan |
| 1960s | 24.74 million people | 100.60 million people | 75.86 million people | Japan |
| 1970s | 33.49 million people | 112.40 million people | 78.92 million people | Japan |
| 1980s | 48.61 million people | 120.67 million people | 72.07 million people | Japan |
| 1990s | 62.12 million people | 125.31 million people | 63.19 million people | Japan |
| 2000s | 71.27 million people | 127.76 million people | 56.49 million people | Japan |
| 2010s | 82.17 million people | 127.45 million people | 45.28 million people | Japan |
| 2020s | 91.67 million people | 123.37 million people | 31.70 million people | Japan |
| 2030s | 97.42 million people | 116.25 million people | 18.82 million people | Japan |
| 2040s | 100.77 million people | 108.93 million people | 8.16 million people | Japan |
| 2050s | 101.78 million people | 102.03 million people | 258,240 people | Japan |
| 2060s | 99.27 million people | 94.71 million people | 4.56 million people | Iran |
| 2070s | 94.11 million people | 87.76 million people | 6.35 million people | Iran |
| 2080s | 88.26 million people | 82.81 million people | 5.45 million people | Iran |
| 2090s | 82.92 million people | 78.93 million people | 3.98 million people | Iran |
| 2100s | 80.05 million people | 76.85 million people | 3.20 million people | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher population by world region, Iran or Japan?
- Iran, at 80.05 million people against 76.85 million people in Japan as of 2100.
- What is the difference in population by world region between Iran and Japan?
- 3.20 million people, with Iran ahead.
- How many years of comparable data are there for Iran and Japan?
- 318 years are reported by both, from 1000 to 2100.
- How do Iran and Japan rank globally for population by world region?
- Iran ranks 30th and Japan ranks 32nd of 238 countries.
- Where does this data come from?
- HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data, published as Population by world region. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Population by country, available from 10,000 BCE to 2100, based on data and estimates from different sources.