There is one place named Kosawa in Japan.
All places in the world called "Kosawa".
Ono (18)
Ota (17)
Hongo (16)
Minato (15)
Wada (15)
Ohama (14)
Tomari (14)
Kawasaki (14)
Hama (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)