Tainai Population 2026
Tainai has a population of 28,509, making it the #864 biggest city in 🇯🇵 Japan, located in Niigata. It is about 341× smaller than Tokyo, the country's biggest city.
Population (city proper)
28,509
Rank in Japan
#864
Coordinates
38.06°N, 139.41°E
~48 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
265 km
165 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 Tainai
FAQ
What is the population of Tainai?
Tainai has a population of 28,509 (city proper, latest official figure via GeoNames), making it the #864 biggest city in Japan.
What region is Tainai in?
Tainai is located in Niigata, Japan.
Is Tainai the capital of Japan?
No, the capital of Japan is Tokyo, about 265 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.