Etymology and distribution of 河久保.

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
↑オフライン検索できるアプリもどうぞ
在日通名大全

日本初、在日通名の研究書「在日通名大全」発売中!
ネットの電話帳 住宅地図 マッポン!

「河久保」さんの名字の分布数。

カンマ区切りで複数の名字を指定できます。

Etymology of 河久保

Distribution of 河久保
Ranking
1 Akiruno-shi(About 20)
2 Hiroshima-shi Asakita-ku(About 10)
2 Nishitama-gun Hinode-machi(About 10)
4 Iwakuni-shi(About 10)
4 Kodaira-shi(About 10)
4 Itabashi-ku(About 10)
4 Fussa-shi(About 10)
4 Kumamoto-shi(About 10)
4 Higashichikuma-gun Chikuhoku-mura(About 10)
10 Eniwa-shi(Very rare)
10 Chiba-shi Inage-ku(Very rare)
10 Funabashi-shi(Very rare)
10 Ageo-shi(Very rare)
10 Tokorozawa-shi(Very rare)
10 Tsurugashima-shi(Very rare)
10 Minoo-shi(Very rare)
10 Hikari-shi(Very rare)
10 Ooshima-gun Suouooshima-chou(Very rare)
10 Kumage-gun Tabuse-chou(Very rare)
10 Houfu-shi(Very rare)
10 Hiroshima-shi Higashi-ku(Very rare)
10 Kita-ku(Very rare)
10 Chiyoda-ku(Very rare)
10 Shinagawa-ku(Very rare)
10 Oota-ku(Very rare)
10 Musashimurayama-shi(Very rare)
10 Nerima-ku(Very rare)
10 Kawasaki-shi Tama-ku(Very rare)
10 Yokohama-shi Minami-ku(Very rare)
10 Yokohama-shi Totsuka-ku(Very rare)
10 Yokohama-shi Isogo-ku(Very rare)
10 Yokohama-shi Aoba-ku(Very rare)
10 Yokosuka-shi(Very rare)
10 Kamiina-gun Minamiminowa-mura(Very rare)
10 Itou-shi(Very rare)