Etymology and distribution of 久保原.

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!

「久保原」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 久保原

Distribution of 久保原
Ranking
1 Maebashi-shi(About 40)
2 Tomioka-shi(About 30)
3 Etajima-shi(About 20)
4 Higashihiroshima-shi(About 20)
4 Ichinomiya-shi(About 20)
4 Matsumoto-shi(About 20)
7 Hiroshima-shi Naka-ku(About 10)
7 Kamiminochi-gun Shinano-machi(About 10)
9 Miyoshi-shi(About 10)
9 Takasaki-shi(About 10)
9 Kashima-shi(About 10)
12 Amagasaki-shi(Very rare)
12 Koube-shi Chuuou-ku(Very rare)
12 Matsudo-shi(Very rare)
12 Fujimino-shi(Very rare)
12 Honjou-shi(Very rare)
12 Higashimatsuyama-shi(Very rare)
12 Oosaka-shi Nishiyodogawa-ku(Very rare)
12 Kure-shi(Very rare)
12 Aki-gun Kumano-chou(Very rare)
12 Inazawa-shi(Very rare)
12 Hachiouji-shi(Very rare)
12 Kita-ku(Very rare)
12 Adachi-ku(Very rare)
12 Fujisawa-shi(Very rare)
12 Oonojou-shi(Very rare)
12 Ina-shi(Very rare)
12 Oomachi-shi(Very rare)
12 Nakatado-gun Tadotsu-chou(Very rare)