Niigata: Population Decline Ranking
All 38 municipalities in Niigata ranked by Population Decline.
Top municipalities in Niigata by population decline: 1. Aga (-61.8%), 2. Sekikawa (-55.3%), 3. Sado (-49.6%).
| Rank | Municipality | Pop. (2025) | Change 2020–2050 |
|---|---|---|---|
| 1 | Niigata Aga | 8,338 | ▼ -61.8% |
| 2 | Niigata Sekikawa | 4,396 | ▼ -55.3% |
| 3 | Niigata Sado | 45,378 | ▼ -49.6% |
| 4 | Niigata Kamo | 23,024 | ▼ -48.8% |
| 5 | Niigata Tookamachi | 44,509 | ▼ -47.8% |
| 6 | Niigata Tsunan | 7,959 | ▼ -47.6% |
| 7 | Niigata Izumozaki | 3,597 | ▼ -47.5% |
| 8 | Niigata Tagami | 10,287 | ▼ -47.0% |
| 9 | Niigata Murakami | 51,422 | ▼ -46.7% |
| 10 | Niigata Myoukou | 27,860 | ▼ -46.7% |
| 11 | Niigata Uonuma | 31,026 | ▼ -46.5% |
| 12 | Niigata Awashimaura | 303 | ▼ -46.5% |
| 13 | Niigata Itoigawa | 36,519 | ▼ -45.1% |
| 14 | Niigata Gosen | 43,481 | ▼ -43.7% |
| 15 | Niigata Nishikan | 50,368 | ▼ -41.3% |
| 16 | Niigata Tainai | 26,235 | ▼ -39.5% |
| 17 | Niigata Ojiya | 31,408 | ▼ -39.2% |
| 18 | Niigata Agano | 37,503 | ▼ -38.8% |
| 19 | Niigata Kashiwazaki | 74,728 | ▼ -37.2% |
| 20 | Niigata Minamiuonuma | 51,184 | ▼ -35.0% |
| 21 | Niigata Yahiko | 7,114 | ▼ -34.8% |
| 22 | Niigata Sanjou | 88,396 | ▼ -33.4% |
| 23 | Niigata Minami | 41,140 | ▼ -33.3% |
| 24 | Niigata Kita | 70,190 | ▼ -33.0% |
| 25 | Niigata Jouetsu | 176,481 | ▼ -32.1% |
| 26 | Niigata Shibata | 89,570 | ▼ -31.5% |
| 27 | Niigata Mitsuke | 36,613 | ▼ -31.4% |
| 28 | Niigata Yuzawa | 7,510 | ▼ -30.4% |
| 29 | Niigata Tsubame | 73,706 | ▼ -29.9% |
| 30 | Niigata Nagaoka | 251,069 | ▼ -26.2% |
| 31 | Niigata Higashi | 127,601 | ▼ -24.7% |
| 32 | Niigata Akiha | 71,563 | ▼ -23.2% |
| 33 | Niigata Niigata | 759,139 | ▼ -21.9% |
| 34 | Niigata Kariwa | 4,318 | ▼ -19.4% |
| 35 | Niigata Nishi | 154,195 | ▼ -17.5% |
| 36 | Niigata Kounan | 66,819 | ▼ -16.4% |
| 37 | Niigata Seirou | 14,071 | ▼ -12.5% |
| 38 | Niigata Chuuou | 177,263 | ▼ -12.2% |