Etymology and distribution of 国沢.

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!

「国沢」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 国沢

Distribution of 国沢
Ranking
1 Kouchi-ken(0.112%)
2 Yamaguchi-ken(0.0296%)
3 Toyama-ken(0.00651%)
4 Oosaka-fu(0.00599%)
5 Hyougo-ken(0.00361%)
6 Hokkaidou(0.00356%)
7 Shimane-ken(0.00324%)
8 Ishikawa-ken(0.00307%)
9 Kagoshima-ken(0.00285%)
10 Nara-ken(0.00238%)
11 Hiroshima-ken(0.00202%)
12 Toukyou-to(0.00189%)
13 Kyouto-fu(0.00166%)
14 Okayama-ken(0.00163%)
15 Fukui-ken(0.00143%)
16 Wakayama-ken(0.00137%)
17 Yamanashi-ken(0.00127%)
18 Chiba-ken(0.00123%)
19 Kanagawa-ken(0.00117%)
20 Saitama-ken(0.0011%)
21 Mie-ken(0.00109%)
22 Nagasaki-ken(0.000773%)
23 Kagawa-ken(0.000764%)
24 Fukuoka-ken(0.000692%)
25 Shiga-ken(0.000649%)
26 Ibaraki-ken(0.00057%)
27 Aichi-ken(0.000538%)
28 Saga-ken(0.000493%)
29 Ehime-ken(0.000492%)
30 Tokushima-ken(0.000468%)
31 Shizuoka-ken(0.000444%)
32 Okinawa-ken(0.000396%)
33 Ooita-ken(0.000322%)
34 Akita-ken(0.0003%)
35 Tochigi-ken(0.000222%)
36 Miyagi-ken(0.000208%)
37 Gunma-ken(0.000203%)
38 Fukushima-ken(0.000201%)
39 Nagano-ken(0.000164%)