This country has 6 unverified place names.
| Aichi | 26 |
| Akita | 21 |
| Aomori | 24 |
| Chiba | 26 |
| Ehime | 14 |
| Fukui | 7 |
| Fukuoka | 26 |
| Fukushima | 21 |
| Gifu | 16 |
| Gunma | 26 |
| Hiroshima | 22 |
| Hokkaido | 92 |
| Hyogo | 29 |
| Ibaraki | 25 |
| Ishikawa | 16 |
| Iwate | 16 |
| Kagawa | 9 |
| Kagoshima | 18 |
| Kanagawa | 30 |
| Kochi | 5 |
| Kumamoto | 22 |
| Kyoto | 13 |
| Mie | 15 |
| Miyagi | 16 |
| Miyazaki | 11 |
| Nagano | 51 |
| Nagasaki | 10 |
| Nara | 10 |
| Niigata | 35 |
| Oita | 11 |
| Okayama | 11 |
| Okinawa | 11 |
| Osaka | 32 |
| Saga | 9 |
| Saitama | 35 |
| Shiga | 10 |
| Shimane | 10 |
| Shizuoka | 35 |
| Tochigi | 20 |
| Tokushima | 10 |
| Tokyo | 55 |
| Tottori | 8 |
| Toyama | 9 |
| Unknown | 2 |
| Wakayama | 13 |
| Yamagata | 14 |
| Yamaguchi | 13 |
| Yamanashi | 14 |