There is one place named Koyo in Japan.
All places in the world called "Koyo".
Ono (18)
Ota (17)
Hongo (16)
Wada (15)
Minato (15)
Ohama (14)
Kawasaki (14)
Hama (14)
Tomari (14)
Nakamura (13)
Oshima (13)
Hara (13)
Nagahama (13)
Yoshida (12)
Sakai (12)
Okubo (12)
Okawa (11)
Shinden (11)
Seto (11)
Kanayama (11)
Hirose (11)
Kawaguchi (11)
Funakoshi (11)
Otani (10)
Takata (10)
Oura (10)
Ichiba (10)
Ikeda (10)
Kamo (10)
Shirahama (10)