「Irohira」(いろひら)さんの名字の由来、語源、分布。

2019年 5月 30日更新

Whole Japan		Prefectures
レベル	3	1　Niigata-ken(About 30) 2　Shizuoka-ken(Very rare) 2　Kanagawa-ken(Very rare) 2　Yamanashi-ken(Very rare) 2　Chiba-ken(Very rare)
Population	About 50
Ranking	44,347

Rank by city
1　Niigata-shi(About 20) 2　Kamo-shi(About 10) 3　Sanjou-shi(Very rare) 3　Yokohama-shi Totsuka-ku(Very rare) 3　Hamamatsu-shi(Very rare) 3　Koufu-shi(Very rare) 3　Kashiwa-shi(Very rare)