Etymology and distribution of 河重.

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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Ratio of 河重.

カンマ区切りで複数の名字を指定できます。

Etymology of 河重

Distribution of 河重
Ranking
1 Yamaguchi-ken(0.00549%)
2 Hiroshima-ken(0.0013%)
3 Shimane-ken(0.000926%)
4 Kyouto-fu(0.000333%)
5 Ehime-ken(0.000246%)
6 Okayama-ken(0.000203%)
7 Fukushima-ken(0.000201%)
8 Oosaka-fu(0.000173%)
9 Toukyou-to(0.000149%)
10 Saitama-ken(0.000147%)
11 Aichi-ken(Very rare)
12 Kanagawa-ken(Very rare)