Itoigawa Population 2026
Itoigawa has a population of 40,765, making it the #663 biggest city in 🇯🇵 Japan, located in Niigata. It is about 239× smaller than Tokyo, the country's biggest city.
Population (city proper)
40,765
Rank in Japan
#663
Coordinates
37.03°N, 137.85°E
~15 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
223 km
138 miles, straight line
Other big cities in Niigata
| City | Population | Rank in Japan |
|---|---|---|
| Niigata | 797,591 | #16 |
| Nagaoka | 266,936 | #90 |
| Jōetsu | 189,430 | #131 |
| Shibata | 96,236 | #282 |
| Sanjō | 94,642 | #290 |
| Kashiwazaki | 86,183 | #318 |
| Tsubame | 77,382 | #355 |
| Niitsu-honchō | 65,910 | #424 |
Cities near Itoigawa
FAQ
What is the population of Itoigawa?
Itoigawa has a population of 40,765 (city proper, latest official figure via GeoNames), making it the #663 biggest city in Japan.
What region is Itoigawa in?
Itoigawa is located in Niigata, Japan.
Is Itoigawa the capital of Japan?
No, the capital of Japan is Tokyo, about 223 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.