Etymology and distribution of 関井.

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!

「関井」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 関井

Distribution of 関井
Ranking
1 Toyama-ken(0.0127%)
2 Miyagi-ken(0.005%)
3 Gunma-ken(0.00385%)
4 Hokkaidou(0.00342%)
5 Oosaka-fu(0.00265%)
6 Ehime-ken(0.00246%)
7 Toukyou-to(0.00239%)
8 Saitama-ken(0.00213%)
9 Wakayama-ken(0.00205%)
10 Niigata-ken(0.00193%)
11 Ibaraki-ken(0.00142%)
12 Aomori-ken(0.00131%)
13 Yamagata-ken(0.00124%)
14 Fukushima-ken(0.0012%)
15 Iwate-ken(0.00114%)
16 Gifu-ken(0.00113%)
17 Kanagawa-ken(0.00104%)
18 Chiba-ken(0.000882%)
19 Mie-ken(0.000876%)
20 Hyougo-ken(0.000739%)
21 Kyouto-fu(0.000665%)
22 Tottori-ken(0.000606%)
23 Nara-ken(0.000594%)
24 Hiroshima-ken(0.000577%)
25 Shizuoka-ken(0.000555%)
26 Tokushima-ken(0.000468%)
27 Shiga-ken(0.000325%)
28 Ooita-ken(0.000322%)
29 Akita-ken(0.0003%)
30 Aichi-ken(0.000202%)
31 Fukuoka-ken(0.000198%)
32 Nagano-ken(0.000164%)