Etymology and distribution of 白米.

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 白米.

カンマ区切りで複数の名字を指定できます。

Etymology of 白米

Distribution of 白米
Ranking
1 Ishikawa-ken(0.00102%)
2 Mie-ken(0.000876%)
3 Hiroshima-ken(0.000865%)
4 Yamaguchi-ken(0.000239%)
5 Hokkaidou(0.000209%)
6 Chiba-ken(0.000176%)
7 Kyouto-fu(0.000166%)
8 Hyougo-ken(Very rare)
9 Aichi-ken(Very rare)
10 Kanagawa-ken(Very rare)
11 Toukyou-to(Very rare)