Niigata's 2026 population is now estimated at 791,952. In 1950, the population of Niigata was 159,000. Niigata experienced a decrease of -2,022 residents over the past year, marking an annual decline of -0.25%. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Niigata, which typically includes Niigata's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Tokyo | 36,953,600 | -0.22% |
| Osaka | 18,873,900 | -0.25% |
| Nagoya | 9,511,730 | -0.24% |
| Fukuoka | 5,453,200 | -0.23% |
| Yokohama | 3,777,491 | 1% |
| Shizuoka | 2,921,450 | -0.3% |
| Sapporo | 2,645,940 | -0.29% |
| Sendai | 2,330,920 | -0.29% |
| Hiroshima | 2,053,290 | -0.24% |
| Kumamoto | 733,444 | -0.23% |
| Okayama | 716,815 | -0.25% |
| Kagoshima | 576,499 | -0.41% |
| Utsunomiya | 516,249 | -0.26% |
| Matsuyama | 500,662 | -0.3% |
| Oita | 473,310 | -0.23% |
| Kurashiki | 469,199 | -0.24% |
| Kanazawa | 460,005 | -0.25% |
| Fukuyama | 459,330 | -0.24% |
| Takamatsu | 413,604 | -0.24% |
| Toyama | 404,360 | -0.37% |
| Miyazaki | 393,787 | -0.24% |
| Nagasaki | 393,167 | -0.86% |
| Toyohashi | 364,054 | -0.31% |
| Takasaki | 363,347 | -0.23% |
| Nagano | 362,689 | -0.42% |
| Iwaki | 353,321 | -0.27% |
| Koriyama | 322,624 | -0.4% |
| Maebashi | 321,546 | -0.46% |
| Kochi | 318,399 | -0.58% |
| Asahikawa | 318,216 | -0.65% |
| Naha | 316,833 | -0.27% |
| Kurume | 300,782 | -0.25% |
| Akita | 294,304 | -0.7% |
| Okinawa | 142,840 | 1.01% |
