Nagasaki: Population Decline Ranking
All 21 municipalities in Nagasaki ranked by Population Decline.
Top municipalities in Nagasaki by population decline: 1. Shinkamigotou (-59.9%), 2. Ojika (-57.9%), 3. Tsushima (-53.2%).
| Rank | Municipality | Pop. (2025) | Change 2020–2050 |
|---|---|---|---|
| 1 | Nagasaki Shinkamigotou | 15,518 | ▼ -59.9% |
| 2 | Nagasaki Ojika | 2,016 | ▼ -57.9% |
| 3 | Nagasaki Tsushima | 25,310 | ▼ -53.2% |
| 4 | Nagasaki Minamishimabara | 37,325 | ▼ -51.3% |
| 5 | Nagasaki Saikai | 23,433 | ▼ -51.2% |
| 6 | Nagasaki Hirado | 26,396 | ▼ -50.7% |
| 7 | Nagasaki Matsuura | 19,295 | ▼ -48.8% |
| 8 | Nagasaki Gotou | 31,441 | ▼ -48.7% |
| 9 | Nagasaki Higashisonogi | 7,124 | ▼ -47.2% |
| 10 | Nagasaki Iki | 22,306 | ▼ -47.1% |
| 11 | Nagasaki Unzen | 38,184 | ▼ -42.6% |
| 12 | Nagasaki Kawatana | 12,312 | ▼ -38.5% |
| 13 | Nagasaki Shimabara | 40,416 | ▼ -37.5% |
| 14 | Nagasaki Nagayo | 38,712 | ▼ -33.1% |
| 15 | Nagasaki Sasebo | 225,977 | ▼ -31.8% |
| 16 | Nagasaki Nagasaki | 382,393 | ▼ -31.5% |
| 17 | Nagasaki Hasami | 13,705 | ▼ -30.4% |
| 18 | Nagasaki Isahaya | 130,092 | ▼ -29.8% |
| 19 | Nagasaki Togitsu | 28,949 | ▼ -26.6% |
| 20 | Nagasaki Saza | 13,691 | ▼ -20.8% |
| 21 | Nagasaki Oomura | 97,445 | ▼ -10.9% |