Etymology and distribution of 数原.

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 数原.

カンマ区切りで複数の名字を指定できます。

Etymology of 数原

Distribution of 数原
Ranking
1 Shizuoka-ken(About 150)
2 Hyougo-ken(About 90)
3 Hokkaidou(About 40)
3 Toukyou-to(About 40)
5 Okayama-ken(About 30)
6 Kagoshima-ken(About 30)
7 Kyouto-fu(About 20)
7 Kanagawa-ken(About 20)
9 Chiba-ken(About 10)
9 Wakayama-ken(About 10)
11 Oosaka-fu(About 10)
12 Saitama-ken(Very rare)
12 Miyagi-ken(Very rare)
12 Hiroshima-ken(Very rare)
12 Aichi-ken(Very rare)
12 Nagano-ken(Very rare)