Etymology and distribution of 国母.

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 国母.

カンマ区切りで複数の名字を指定できます。

Etymology of 国母

Distribution of 国母
Ranking
1 Mooka-shi(0.0808%)
2 Haga-gun Mashiko-machi(0.017%)
3 Hasuda-shi(0.00713%)
4 Saitama-shi Sakura-ku(0.00626%)
5 Ootawara-shi(0.00592%)
6 Saitama-shi Midori-ku(0.0057%)
7 Utsunomiya-shi(0.00398%)
8 Taitou-ku(0.00373%)
9 Chikusei-shi(0.00358%)
10 Matsudo-shi(0.00348%)
11 Mito-shi(0.00346%)
12 Kodaira-shi(0.00341%)
13 Yokohama-shi Minami-ku(0.00267%)
14 Sapporo-shi Toyohira-ku(0.00262%)
15 Yokohama-shi Kouhoku-ku(0.00197%)