Etymology and distribution of 岩屋口.

The Japanese surnames etymology dictionary.
https://play.google.com/store/apps/details?id=info.jigensha.jcedfreeGoogle Play で手に入れよう https://apps.apple.com/us/app/id1471109324
↑オフライン検索できるアプリもどうぞ

Ratio of 岩屋口.

カンマ区切りで複数の名字を指定できます。

Etymology of 岩屋口

Distribution of 岩屋口
Ranking
1 Minamikyuushuu-shi(0.0262%)
2 Asakuchi-shi(0.00903%)
3 Shibushi-shi(0.009%)
4 Kawasaki-shi Nakahara-ku(0.00306%)
5 Kitakyuushuu-shi Kokurakita-ku(0.00278%)
6 Yokohama-shi Kounan-ku(0.00233%)
7 Takaradzuka-shi(0.00224%)
8 Ube-shi(0.0021%)
9 Kagoshima-shi(0.0015%)
10 Kumamoto-shi(0.00068%)