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