Etymology and distribution of 丸内.

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 丸内.

カンマ区切りで複数の名字を指定できます。

Etymology of 丸内

Distribution of 丸内
Ranking
1 Kumamoto-ken(About 140)
2 Saga-ken(About 60)
3 Oosaka-fu(About 50)
4 Ehime-ken(About 40)
5 Fukuoka-ken(About 40)
6 Toukyou-to(About 20)
6 Kagoshima-ken(About 20)
8 Kyouto-fu(About 20)
8 Nagasaki-ken(About 20)
10 Mie-ken(About 10)
10 Hyougo-ken(About 10)
10 Chiba-ken(About 10)
10 Saitama-ken(About 10)
10 Nara-ken(About 10)
10 Aichi-ken(About 10)
16 Yamaguchi-ken(Very rare)
16 Fukui-ken(Very rare)
16 Ibaraki-ken(Very rare)
16 Shizuoka-ken(Very rare)