There are 5 places named Iwaya in Japan.
All places in the world called "Iwaya".
Ono (18)
Ota (17)
Hongo (16)
Minato (15)
Wada (15)
Hama (14)
Tomari (14)
Ohama (14)
Kawasaki (14)
Nakamura (13)
Hara (13)
Nagahama (13)
Oshima (13)
Okubo (12)
Sakai (12)
Yoshida (12)
Shinden (11)
Seto (11)
Funakoshi (11)
Kawaguchi (11)
Okawa (11)
Kanayama (11)
Hirose (11)
Nakayama (10)
Shirahama (10)
Shimizu (10)
Otani (10)
Takada (10)
Yamada (10)
Ichiba (10)