Etymology and distribution of 雨沢.

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!

「雨沢」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 雨沢

Distribution of 雨沢
Ranking
1 Higashiibaraki-gun Ooarai-machi(0.224%)
2 Kamiina-gun Nakagawa-mura(0.136%)
3 Hitachinaka-shi(0.101%)
4 Higashimuro-gun Taiji-chou(0.0746%)
5 Tokachishi-chou Honbetsu-chou(0.06%)
6 Shimoina-gun Matsukawa-machi(0.0264%)
7 Naka-gun Toukai-mura(0.0233%)
8 Komagane-shi(0.0228%)
9 Higashimuro-gun Nachikatsuura-chou(0.0152%)
10 Nishitama-gun Mizuho-machi(0.0149%)
11 Kitaibaraki-shi(0.014%)
12 Oura-gun Ooizumi-machi(0.0123%)
13 Ootsuki-shi(0.0109%)
14 Tsukubamirai-shi(0.0102%)
15 Iwaki-shi(0.00802%)
16 Kai-shi(0.00587%)
17 Hitachi-shi(0.00554%)
18 Choushi-shi(0.00518%)
19 Akishima-shi(0.00482%)
20 Yokohama-shi Totsuka-ku(0.00421%)
21 Misato-shi(0.00419%)
22 Saitama-shi Minami-ku(0.00376%)
23 Mito-shi(0.00346%)
24 Kawasaki-shi Takatsu-ku(0.00336%)
25 Matsumoto-shi(0.00334%)
26 Tachikawa-shi(0.00334%)
27 Koutou-ku(0.00312%)
28 Yokohama-shi Isogo-ku(0.00306%)
29 Hadano-shi(0.00303%)
30 Yokkaichi-shi(0.00298%)
31 Sumida-ku(0.0027%)
32 Fuchuu-shi(0.00262%)
33 Ageo-shi(0.00235%)
34 Matsudo-shi(0.00232%)
35 Yokohama-shi Tsurumi-ku(0.00218%)
36 Yokosuka-shi(0.00204%)
37 Kita-ku(0.00173%)
38 Nagaoka-shi(0.00141%)
39 Machida-shi(0.00135%)
40 Fujisawa-shi(0.00133%)
41 Toyota-shi(0.00121%)
42 Nerima-ku(0.00105%)
43 Setagaya-ku(0.000814%)
44 Hamamatsu-shi(0.000562%)