Etymology and distribution of 月坂.

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!

「月坂」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 月坂

Distribution of 月坂
Ranking
1 Matsue-shi(About 70)
2 Oki-gun Ama-chou(About 10)
3 Amagasaki-shi(About 10)
3 Kawagoe-shi(About 10)
3 Utsunomiya-shi(About 10)
3 Yonago-shi(About 10)
7 Kyouto-shi Fushimi-ku(Very rare)
7 Himeji-shi(Very rare)
7 Sapporo-shi Chuuou-ku(Very rare)
7 Matsudo-shi(Very rare)
7 Kishiwada-shi(Very rare)
7 Okayama-shi(Very rare)
7 Izumo-shi(Very rare)
7 Oki-gun Okinoshima-chou(Very rare)
7 Hiroshima-shi Higashi-ku(Very rare)
7 Nagoya-shi Midori-ku(Very rare)
7 Shinagawa-ku(Very rare)
7 Suginami-ku(Very rare)
7 Machida-shi(Very rare)
7 Fukuoka-shi Minami-ku(Very rare)
7 Kitaadzumi-gun Matsukawa-mura(Very rare)
7 Susaki-shi(Very rare)
7 Tottori-shi(Very rare)