Which has higher population, total, Japan or South Asia (IDA & IBRD)?

South Asia (IDA & IBRD), at 1.69 billion against 123.37 million in Japan as of 2025.

What is the difference in population, total between Japan and South Asia (IDA & IBRD)?

1.57 billion, with South Asia (IDA & IBRD) ahead.

How many years of comparable data are there for Japan and South Asia (IDA & IBRD)?

66 years are reported by both, from 1960 to 2025.

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.

Japan vs South Asia (IDA & IBRD): Population, total

Japan

123.37 million

in 2025

South Asia (IDA & IBRD)

1.69 billion

in 2025

Japan rank

12th

South Asia (IDA & IBRD) rank

14th

Population, total over time

Japan
South Asia (IDA & IBRD)

How they compare

South Asia (IDA & IBRD) currently reports 1.69 billion against 123.37 million in Japan, a difference of 1.57 billion.

That makes South Asia (IDA & IBRD)'s figure about 13.7 times Japan's.

Across all 66 years both countries report, South Asia (IDA & IBRD) has been ahead every year.

Japan ranks 12th and South Asia (IDA & IBRD) ranks 14th of 217 countries.

South Asia (IDA & IBRD) has averaged higher in every one of the 7 decades both report.

Head to head by decade

Decade	Japan	South Asia (IDA & IBRD)	Difference	Ahead
1960s	97.49 million	566.14 million	468.65 million	South Asia (IDA & IBRD)
1970s	110.42 million	710.66 million	600.25 million	South Asia (IDA & IBRD)
1980s	120.24 million	897.34 million	777.10 million	South Asia (IDA & IBRD)
1990s	125.22 million	1.11 billion	987.76 million	South Asia (IDA & IBRD)
2000s	127.67 million	1.33 billion	1.21 billion	South Asia (IDA & IBRD)
2010s	127.29 million	1.53 billion	1.40 billion	South Asia (IDA & IBRD)
2020s	124.82 million	1.66 billion	1.53 billion	South Asia (IDA & IBRD)

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population, total, Japan or South Asia (IDA & IBRD)?: South Asia (IDA & IBRD), at 1.69 billion against 123.37 million in Japan as of 2025.
What is the difference in population, total between Japan and South Asia (IDA & IBRD)?: 1.57 billion, with South Asia (IDA & IBRD) ahead.
How many years of comparable data are there for Japan and South Asia (IDA & IBRD)?: 66 years are reported by both, from 1960 to 2025.
How do Japan and South Asia (IDA & IBRD) rank globally for population, total?: Japan ranks 12th and South Asia (IDA & IBRD) ranks 14th of 217 countries.
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.

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Japan vs South Asia (IDA & IBRD): Population, total. Statizoid, drawing on World Population Prospects, United Nations (UN). Retrieved 17 August 2026, from https://climate.statizoid.com/compare/population-total/japan/south-asia-ida-and-ibrd/

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About this data

Indicator: Population, total
Source: World Population Prospects, United Nations (UN)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 264 places, 17,394 data points, 1960–2025
Last refreshed: 06 August 2026

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.