Etymology and distribution of 屋中.

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 屋中.

カンマ区切りで複数の名字を指定できます。

Etymology of 屋中

Distribution of 屋中
Ranking
1 Toukyou-to(About 20)
2 Hokkaidou(About 20)
3 Chiba-ken(About 10)
3 Saitama-ken(About 10)
3 Kanagawa-ken(About 10)
6 Fukushima-ken(Very rare)