Etymology and distribution of 井岸.

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

Ratio of 井岸.

カンマ区切りで複数の名字を指定できます。

Etymology of 井岸

Distribution of 井岸
Ranking
1 Oshimashi-chou Mori-machi(0.408%)
2 Mikata-gun Shin'onsen-chou(0.0183%)
3 Oshimashi-chou Nanae-chou(0.0123%)
4 Hokuto-shi(0.00806%)
5 Kushiro-shi(0.00725%)
6 Otaru-shi(0.00672%)
7 Hakodate-shi(0.00625%)
8 Iruma-shi(0.0034%)
9 Sapporo-shi Chuuou-ku(0.00301%)
10 Fujieda-shi(0.00296%)
11 Sumida-ku(0.0027%)
12 Yokohama-shi Minami-ku(0.00267%)
13 Nakano-ku(0.00216%)
14 Sapporo-shi Kita-ku(0.0019%)
15 Sagamihara-shi(0.000829%)