Iruma Population 2026
Iruma has a population of 147,166, making it the #175 biggest city in 🇯🇵 Japan, located in Saitama. Roughly 0.1% of Japan's population lives here. It is about 66× smaller than Tokyo, the country's biggest city.
Population (city proper)
147,166
Rank in Japan
#175
Coordinates
35.82°N, 139.37°E
~126 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
33 km
20 miles, straight line
Other big cities in Saitama
Cities near Iruma
- Sayama160,843 people · ~6 km away
- Hakonegasaki31,765 people · ~6 km away
- Hannō80,361 people · ~6 km away
- Hamura54,622 people · ~8 km away
- Yokota69,550 people · ~8 km away
- Higashiyamato83,901 people · ~9 km away
FAQ
What is the population of Iruma?
Iruma has a population of 147,166 (city proper, latest official figure via GeoNames), making it the #175 biggest city in Japan.
What region is Iruma in?
Iruma is located in Saitama, Japan.
Is Iruma the capital of Japan?
No, the capital of Japan is Tokyo, about 33 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.