Etymology and distribution of 星元.

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 星元.

カンマ区切りで複数の名字を指定できます。

Etymology of 星元

Distribution of 星元
Ranking
1 Tokushima-ken(0.00187%)
2 Yamaguchi-ken(0.000955%)
3 Shizuoka-ken(0.000666%)
4 Kagoshima-ken(0.00061%)
5 Hiroshima-ken(0.000433%)
6 Oosaka-fu(0.000403%)
7 Toyama-ken(0.000342%)
8 Hyougo-ken(0.000164%)
9 Aichi-ken(0.000134%)
10 Toukyou-to(Very rare)