Etymology and distribution of 渡井口.

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!

渡井口さんの分布

Population

Distributions by prefecture
都道府県分布数図
Distributions by city
市区町村分布数図
Distributions by subregion
小地域分布数図
Whole Japan Prefectures
レベル3 1 Oosaka-fu(About 40)
2 Hyougo-ken(About 10)
3 Kanagawa-ken(Very rare)
3 Tokushima-ken(Very rare)
PopulationAbout 60
Ranking41,097
Rank by city
1 Oosaka-shi Higashisumiyoshi-ku(About 10)
2 Awaji-shi(About 10)
3 Yao-shi(Very rare)
3 Yokohama-shi Isogo-ku(Very rare)
3 Han'nan-shi(Very rare)
3 Fujiidera-shi(Very rare)
3 Hirakata-shi(Very rare)
3 Matsubara-shi(Very rare)
3 Neyagawa-shi(Very rare)
3 Naruto-shi(Very rare)
Rank by subregion
1 兵庫県 淡路市 野島蟇浦(About 10)
1 大阪府 大阪市東住吉区 田辺(About 10)

Distributions of ratios

Distributions of ratios by prefecture
都道府県分布比率図
Distributions of ratios by city
市区町村分布比率図
Distributions of ratios by subregion
小地域分布比率図
Whole Japan Prefectures
RatiosVery rare 1 Oosaka-fu(0.000518%)
2 Tokushima-ken(0.000468%)
3 Hyougo-ken(0.000164%)
4 Kanagawa-ken(Very rare)
Rank by city
1 Awaji-shi(0.0128%)
2 Oosaka-shi Higashisumiyoshi-ku(0.0113%)
3 Han'nan-shi(0.00785%)
4 Fujiidera-shi(0.00696%)
5 Naruto-shi(0.00608%)
6 Matsubara-shi(0.00346%)
7 Yokohama-shi Isogo-ku(0.00306%)
8 Neyagawa-shi(0.00199%)
9 Yao-shi(0.00173%)
10 Hirakata-shi(0.00125%)
Rank by subregion

マッポン! で分布を見る