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| Prefecture (In Alphabetical Order) | No. of Facilities |
| Aichi | 3 |
| Akita | 0 |
| Aomori | 0 |
| Chiba | 7 |
| Ehime | 2 |
| Fukui | 0 |
| Fukuoka | 1 |
| Fukushima | 3 |
| Gifu | 9 |
| Gunma | 1 |
| Hiroshima | 11 |
| Hokkaido | 8 |
| Hyogo | 5 |
| Ibaraki | 0 |
| Ishikawa | 4 |
| Iwate | 1 |
| Kagawa | 2 |
| Kagoshima | 2 |
| Kanagawa | 6 |
| Kochi | 0 |
| Kumamoto | 1 |
| Kyoto | 55 |
| Mie | 2 |
| Miyagi | 4 |
| Miyazaki | 0 |
| Nagano | 12 |
| Nagasaki | 5 |
| Nara | 8 |
| Niigata | 3 |
| Oita | 2 |
| Okayama | 3 |
| Okinawa | 0 |
| Osaka | 13 |
| Saga | 0 |
| Saitama | 0 |
| Shiga | 2 |
| Shimane | 0 |
| Shizuoka | 6 |
| Tochigi | 7 |
| Tokushima | 0 |
| Tokyo | 52 |
| Tottori | 0 |
| Toyama | 1 |
| Wakayama | 3 |
| Yamagata | 0 |
| Yamaguchi | 1 |
| Yamanashi | 5 |