| City | 2026 Pop. ↓ |
|---|---|
| Kawasaki | 1,634,478 |
| Kobe | 1,628,857 |
| Kyoto | 1,534,703 |
| Kitakyushu | 1,036,944 |
| Kumamoto | 972,195 |
| Kagoshima | 759,762 |
| Kurashiki | 640,632 |
| Kawaguchi | 630,902 |
| Kanazawa | 574,235 |
| Kashiwa | 512,917 |
| Kawagoe | 469,406 |
| Koriyama | 442,338 |
| Kurume | 409,434 |
| Kochi | 407,165 |
| Koshigaya | 391,861 |
| Kasugai | 359,310 |
| Kakogawa | 333,700 |
| Kure | 289,669 |
| Kasukabe | 262,679 |
| Kumagaya | 262,433 |
| Kofu | 243,249 |
| Kodaira | 209,751 |
| Kishiwada | 208,589 |
| Kariya | 206,324 |
| Kuki | 203,264 |
| Komaki | 199,819 |
| Kakamigahara | 195,083 |
| Kusatsu | 194,262 |
| Koga | 188,095 |
| Kuwana | 187,108 |
| Kisarazu | 183,805 |
| Kamakura | 179,256 |
| Kushiro | 176,544 |
| Kirishima | 166,215 |
| Kashihara | 160,242 |
| Karatsu | 158,437 |
| Konosu | 157,701 |
| Kitami | 155,882 |
| Kawanishi | 155,744 |
| Kakegawa | 155,172 |
| Kazo | 150,675 |
| Kiryu | 143,686 |
| Komatsu | 143,377 |
| Kokubunji | 137,498 |
| Kawachinagano | 137,270 |
| Kanoya | 136,465 |
| Kamagaya | 132,242 |
| Koganei | 131,926 |
| Kadoma | 115,345 |
| Kasuga | 111,569 |