Etymology and distribution of 出倉.

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 出倉.

カンマ区切りで複数の名字を指定できます。

Etymology of 出倉

Distribution of 出倉
Ranking
1 Hokkaidou(About 300)
2 Fukui-ken(About 200)
3 Ishikawa-ken(About 110)
4 Toukyou-to(About 70)
5 Oosaka-fu(About 40)
6 Kyouto-fu(About 30)
6 Kanagawa-ken(About 30)
8 Chiba-ken(About 20)
9 Shiga-ken(About 10)
10 Nara-ken(Very rare)
10 Nagano-ken(Very rare)
10 Shizuoka-ken(Very rare)