Nagano: Population Decline Ranking
All 77 municipalities in Nagano ranked by Population Decline.
Top municipalities in Nagano by population decline: 1. Tenryuu (-69.1%), 2. Sakae (-61.8%), 3. Hiraya (-59.9%).
| Rank | Municipality | Pop. (2025) | Change 2020–2050 |
|---|---|---|---|
| 1 | Nagano Tenryuu | 965 | ▼ -69.1% |
| 2 | Nagano Sakae | 1,466 | ▼ -61.8% |
| 3 | Nagano Hiraya | 353 | ▼ -59.9% |
| 4 | Nagano Outaki | 586 | ▼ -59.2% |
| 5 | Nagano Chikuhoku | 3,734 | ▼ -57.1% |
| 6 | Nagano Neba | 784 | ▼ -55.6% |
| 7 | Nagano Ogawa | 2,001 | ▼ -55.3% |
| 8 | Nagano Anan | 3,672 | ▼ -53.6% |
| 9 | Nagano Otari | 2,420 | ▼ -53.5% |
| 10 | Nagano Agematsu | 3,647 | ▼ -51.8% |
| 11 | Nagano Yamanouchi | 10,294 | ▼ -50.9% |
| 12 | Nagano Shinano | 6,882 | ▼ -50.8% |
| 13 | Nagano Ooshika | 941 | ▼ -50.5% |
| 14 | Nagano Nagawa | 5,148 | ▼ -49.6% |
| 15 | Nagano Ookuwa | 3,004 | ▼ -49.2% |
| 16 | Nagano Kiso | 9,547 | ▼ -49.2% |
| 17 | Nagano Nagiso | 3,536 | ▼ -49.0% |
| 18 | Nagano Iiyama | 17,682 | ▼ -46.8% |
| 19 | Nagano Iizuna | 9,657 | ▼ -45.7% |
| 20 | Nagano Ikusaka | 1,497 | ▼ -45.2% |
| 21 | Nagano Koumi | 4,048 | ▼ -44.7% |
| 22 | Nagano Oomachi | 23,956 | ▼ -44.6% |
| 23 | Nagano Sakuho | 9,570 | ▼ -44.3% |
| 24 | Nagano Tateshina | 6,203 | ▼ -43.4% |
| 25 | Nagano Nozawaonsen | 2,916 | ▼ -42.2% |
| 26 | Nagano Kiso | 2,346 | ▼ -42.1% |
| 27 | Nagano Achi | 5,707 | ▼ -41.0% |
| 28 | Nagano Yasuoka | 1,377 | ▼ -40.8% |
| 29 | Nagano Takayama | 6,165 | ▼ -40.3% |
| 30 | Nagano Kijimadaira | 3,909 | ▼ -39.2% |
| 31 | Nagano Sakaki | 12,885 | ▼ -39.1% |
| 32 | Nagano Shimosuwa | 17,625 | ▼ -38.2% |
| 33 | Nagano Tatsuno | 17,037 | ▼ -37.9% |
| 34 | Nagano Urugi | 451 | ▼ -37.4% |
| 35 | Nagano Iijima | 8,491 | ▼ -36.3% |
| 36 | Nagano Omi | 2,311 | ▼ -36.3% |
| 37 | Nagano Shimojou | 3,135 | ▼ -35.8% |
| 38 | Nagano Ikeda | 8,612 | ▼ -34.4% |
| 39 | Nagano Okaya | 44,482 | ▼ -34.1% |
| 40 | Nagano Kitaaiki | 611 | ▼ -31.8% |
| 41 | Nagano Nakagawa | 4,351 | ▼ -31.5% |
| 42 | Nagano Takagi | 5,507 | ▼ -31.2% |
| 43 | Nagano Asahi | 4,047 | ▼ -30.9% |
| 44 | Nagano Kawakami | 4,176 | ▼ -30.6% |
| 45 | Nagano Matsukawa | 11,829 | ▼ -30.4% |
| 46 | Nagano Komoro | 40,185 | ▼ -30.3% |
| 47 | Nagano Nakano | 40,223 | ▼ -30.3% |
| 48 | Nagano Minamiaiki | 866 | ▼ -29.5% |
| 49 | Nagano Aoki | 3,778 | ▼ -29.1% |
| 50 | Nagano Chikuma | 57,103 | ▼ -27.5% |
| 51 | Nagano Hakuba | 8,375 | ▼ -26.3% |
| 52 | Nagano Iida | 90,765 | ▼ -25.9% |
| 53 | Nagano Suzaka | 47,774 | ▼ -25.9% |
| 54 | Nagano Fujimi | 13,366 | ▼ -25.0% |
| 55 | Nagano Matsukawa | 9,421 | ▼ -24.7% |
| 56 | Nagano Toyooka | 6,191 | ▼ -24.4% |
| 57 | Nagano Suwa | 46,354 | ▼ -24.3% |
| 58 | Nagano Obuse | 10,458 | ▼ -24.3% |
| 59 | Nagano Ina | 63,508 | ▼ -24.1% |
| 60 | Nagano Minamimaki | 3,339 | ▼ -22.7% |
| 61 | Nagano Miyada | 8,106 | ▼ -22.1% |
| 62 | Nagano Minowa | 23,876 | ▼ -21.6% |
| 63 | Nagano Komagane | 30,861 | ▼ -21.5% |
| 64 | Nagano Ueda | 144,202 | ▼ -21.4% |
| 65 | Nagano Takamori | 12,112 | ▼ -20.3% |
| 66 | Nagano Nagano | 357,077 | ▼ -18.4% |
| 67 | Nagano Toumi | 28,549 | ▼ -18.4% |
| 68 | Nagano Chino | 54,409 | ▼ -17.1% |
| 69 | Nagano Azumino | 91,794 | ▼ -17.1% |
| 70 | Nagano Shiojiri | 65,442 | ▼ -14.6% |
| 71 | Nagano Matsumoto | 232,241 | ▼ -14.1% |
| 72 | Nagano Saku | 97,017 | ▼ -12.9% |
| 73 | Nagano Yamagata | 8,103 | ▼ -11.3% |
| 74 | Nagano Hara | 7,786 | ▼ -10.1% |
| 75 | Nagano Karuizawa | 18,483 | ▼ -6.4% |
| 76 | Nagano Miyota | 16,546 | ▼ -1.2% |
| 77 | Nagano Minamiminowa | 15,993 | ▲ +0.5% |