Etymology and distribution of 熊王.

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
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Popuration of 熊王.

カンマ区切りで複数の名字を指定できます。

Etymology of 熊王

Distribution of 熊王
Ranking
1 Shizuoka-ken(About 200)
2 Yamanashi-ken(About 200)
3 Kanagawa-ken(About 50)
4 Toukyou-to(About 40)
5 Chiba-ken(About 10)
5 Saitama-ken(About 10)
5 Ibaraki-ken(About 10)
8 Oosaka-fu(Very rare)
8 Aichi-ken(Very rare)
8 Gunma-ken(Very rare)