Number of Islands in Japan by Prefecture
There are 6,852 islands in Japan. The following shows the number of islands by prefecture. Obviously inland prefectures do not have any island. Other prefectures have some islands except Osaka.
| Prefecture | Number of Islands |
| Nagasaki | 971 |
| Kagoshima | 605 |
| Hokkaido | 508 |
| Shimane | 369 |
| Okinawa | 363 |
| Tokyo | 330 |
| Miyagi | 311 |
| Iwate | 286 |
| Ehime | 270 |
| Wakayama | 253 |
| Yamaguchi | 249 |
| Mie | 233 |
| Miyazaki | 179 |
| Kumamoto | 178 |
| Kochi | 159 |
| Hiroshima | 142 |
| Aomori | 114 |
| Kagawa | 112 |
| Ishikawa | 110 |
| Hyogo | 110 |
| Oita | 109 |
| Shizuoka | 106 |
| Chiba | 95 |
| Niigata | 92 |
| Tokushima | 88 |
| Okayama | 87 |
| Fukuoka | 62 |
| Fukui | 58 |
| Saga | 55 |
| Kyoto | 49 |
| Akita | 47 |
| Aichi | 41 |
| Tottori | 35 |
| Yamagata | 29 |
| Kanagawa | 27 |
| Fukushima | 13 |
| Ibaraki | 7 |
| Toyama | 3 |
| Tochigi | 0 |
| Gunma | 0 |
| Saitama | 0 |
| Yamanashi | 0 |
| Nagano | 0 |
| Gifu | 0 |
| Shiga | 0 |
| Osaka | 0 |
| Nara | 0 |
Source is 5th Regional Coast Guard Headquarters.
www1.kaiho.mlit.go.jp/KAN5/siryouko/monosiri/shima.htm
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