Japan Facts
Capital of JapanThe capital of Japan is Tokyo.
| Capital | Tokyo |
| Population (UN estimate, 2024, rounded) | 123.8 million |
| Total area | 377,975 km² |
| Population density (calculated) | 328 people per km² |
| Currency | Japanese yen (JPY) |
| Region | Asia |
How we got the density
- Density is the one figure on this page that is calculated rather than looked up: population ÷ area.
- 123.8 million people = 123,800,000 people. Divided by 377,975 km²: 327.53 people per km², which rounds to 328.
Check it backwards
328 × 377,975 km² ≈ 123,786,813 people — back to the population, apart from the rounding of the density to a whole number.
Questions people also ask
What is the capital of Japan?
The capital of Japan is Tokyo.
How many people live in Japan?
About 123.8 million, by the UN World Population Prospects 2024 estimate (rounded). Population density works out to 328 people per km².
How big is Japan?
Japan covers 377,975 km² in total area.
What currency does Japan use?
The Japanese yen (JPY).