Etymology and distribution of 下土井.

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!

「下土井」さんの名字の分布比率。

カンマ区切りで複数の名字を指定できます。

Etymology of 下土井

Distribution of 下土井
Ranking
1 Awaji-shi(0.0383%)
2 Hiroshima-shi Naka-ku(0.0261%)
3 Kamiukena-gun Kumakougen-chou(0.0207%)
4 Hiroshima-shi Nishi-ku(0.018%)
5 Chita-gun Mihama-chou(0.0167%)
6 Aki-gun Kumano-chou(0.0147%)
7 Iyo-gun Masaki-chou(0.0119%)
8 Touon-shi(0.0119%)
9 Chita-gun Taketoyo-chou(0.0102%)
10 Aki-gun Fuchuu-chou(0.00945%)
11 Yanai-shi(0.00853%)
12 Hiroshima-shi Higashi-ku(0.00834%)
13 Sumoto-shi(0.00668%)
14 Settsu-shi(0.00619%)
15 Hiroshima-shi Asakita-ku(0.00574%)
16 Hiroshima-shi Asaminami-ku(0.00505%)
17 Kyouto-shi Nakagyou-ku(0.00447%)
18 Tondabayashi-shi(0.00388%)
19 Hiroshima-shi Minami-ku(0.00369%)
20 Mihara-shi(0.0033%)
21 Niihama-shi(0.00277%)
22 Sapporo-shi Toyohira-ku(0.00262%)
23 Matsuyama-shi(0.00261%)
24 Shuunan-shi(0.00243%)
25 Koube-shi Nishi-ku(0.00242%)
26 Higashioosaka-shi(0.000934%)