Etymology and distribution of 井沢.

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!

「井沢」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 井沢

Distribution of 井沢
Ranking
1 Nagano-ken(About 1,300)
2 Aichi-ken(About 1,200)
3 Hyougo-ken(About 1,200)
4 Toukyou-to(About 1,100)
5 Kanagawa-ken(About 1,100)
6 Oosaka-fu(About 900)
7 Hokkaidou(About 800)
8 Saitama-ken(About 800)
9 Shizuoka-ken(About 700)
10 Yamagata-ken(About 700)
11 Gifu-ken(About 700)
12 Niigata-ken(About 600)
13 Toyama-ken(About 500)
14 Chiba-ken(About 500)
15 Tochigi-ken(About 300)
16 Kyouto-fu(About 300)
17 Hiroshima-ken(About 200)
18 Aomori-ken(About 200)
19 Kumamoto-ken(About 200)
20 Fukuoka-ken(About 200)
21 Tottori-ken(About 200)
21 Tokushima-ken(About 200)
23 Ibaraki-ken(About 200)
24 Kouchi-ken(About 150)
25 Fukushima-ken(About 140)
26 Gunma-ken(About 130)
27 Ooita-ken(About 130)
28 Nara-ken(About 130)
29 Kagawa-ken(About 100)
30 Shiga-ken(About 100)
31 Wakayama-ken(About 100)
32 Okayama-ken(About 90)
32 Mie-ken(About 90)
34 Nagasaki-ken(About 70)
34 Miyazaki-ken(About 70)
36 Ishikawa-ken(About 70)
36 Yamaguchi-ken(About 70)
38 Miyagi-ken(About 60)
39 Shimane-ken(About 40)
40 Ehime-ken(About 30)
40 Yamanashi-ken(About 30)
42 Fukui-ken(About 30)
43 Saga-ken(About 30)
44 Akita-ken(About 20)
45 Kagoshima-ken(About 20)
46 Iwate-ken(About 10)