Etymology and distribution of 一井.

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!

「一井」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 一井

Distribution of 一井
Ranking
1 Kyouto-fu(About 500)
2 Hyougo-ken(About 500)
3 Oosaka-fu(About 300)
4 Shiga-ken(About 300)
5 Iwate-ken(About 110)
6 Kanagawa-ken(About 100)
7 Toukyou-to(About 100)
8 Miyazaki-ken(About 90)
8 Ooita-ken(About 90)
10 Tokushima-ken(About 50)
10 Okayama-ken(About 50)
12 Nara-ken(About 50)
13 Toyama-ken(About 40)
13 Hokkaidou(About 40)
15 Fukuoka-ken(About 40)
15 Aichi-ken(About 40)
17 Kagawa-ken(About 30)
18 Shizuoka-ken(About 30)
18 Ehime-ken(About 30)
18 Hiroshima-ken(About 30)
18 Saitama-ken(About 30)
18 Chiba-ken(About 30)
18 Mie-ken(About 30)
24 Nagano-ken(About 20)
24 Kumamoto-ken(About 20)
24 Miyagi-ken(About 20)
27 Yamaguchi-ken(About 10)
28 Ibaraki-ken(About 10)
28 Fukui-ken(About 10)
28 Ishikawa-ken(About 10)
28 Gifu-ken(About 10)
32 Kagoshima-ken(Very rare)
32 Fukushima-ken(Very rare)
32 Yamanashi-ken(Very rare)