Nagaoka Population 2026
Nagaoka has a population of 266,936, making it the #90 biggest city in 🇯🇵 Japan, located in Niigata. Roughly 0.2% of Japan's population lives here. It is about 36× smaller than Tokyo, the country's biggest city.
Population (city proper)
266,936
Rank in Japan
#90
Coordinates
37.45°N, 138.85°E
~23 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
210 km
130 miles, straight line
Other big cities in Niigata
| City | Population | Rank in Japan |
|---|---|---|
| Niigata | 797,591 | #16 |
| 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 |
| Murakami | 58,300 | #485 |
Cities near Nagaoka
FAQ
What is the population of Nagaoka?
Nagaoka has a population of 266,936 (city proper, latest official figure via GeoNames), making it the #90 biggest city in Japan.
What region is Nagaoka in?
Nagaoka is located in Niigata, Japan.
Is Nagaoka the capital of Japan?
No, the capital of Japan is Tokyo, about 210 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.