There are 2 places named Koyasu in Japan.
All places in the world called "Koyasu".
Ono (18)
Ota (17)
Hongo (16)
Wada (15)
Minato (15)
Tomari (14)
Kawasaki (14)
Hama (14)
Ohama (14)
Nakamura (13)
Nagahama (13)
Oshima (13)
Hara (13)
Okubo (12)
Yoshida (12)
Sakai (12)
Hirose (11)
Kawaguchi (11)
Funakoshi (11)
Shinden (11)
Okawa (11)
Seto (11)
Kanayama (11)
Shimizu (10)
Ogawa (10)
Ohara (10)
Yamada (10)
Takada (10)
Nakayama (10)
Otani (10)