Etymology and distribution of 臼坂.

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!

「臼坂」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 臼坂

Distribution of 臼坂
Ranking
1 Saijou-shi(About 80)
2 Matsuyama-shi(About 30)
3 Sakai-shi(About 10)
3 Oota-ku(About 10)
5 Oosaka-shi Asahi-ku(About 10)
5 Matsue-shi(About 10)
5 Imabari-shi(About 10)
5 Kita-ku(About 10)
9 Chiba-shi Mihama-ku(Very rare)
9 Inzai-shi(Very rare)
9 Suita-shi(Very rare)
9 Moriguchi-shi(Very rare)
9 Matsubara-shi(Very rare)
9 Hiroshima-shi Saeki-ku(Very rare)
9 Nagoya-shi Minato-ku(Very rare)
9 Nagoya-shi Atsuta-ku(Very rare)
9 Takashima-shi(Very rare)
9 Yokohama-shi Kanagawa-ku(Very rare)
9 Kitakyuushuu-shi Kokurakita-ku(Very rare)
9 Nagano-shi(Very rare)