Etymology and distribution of 外内.

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!

「外内」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 外内

Distribution of 外内
Ranking
1 Ooshima-gun Kikai-chou(0.245%)
2 Shiribeshishi-chou Furubira-chou(0.0688%)
3 Chikujou-gun Yoshitomi-machi(0.05%)
4 Sado-shi(0.0314%)
5 Tokachishi-chou Honbetsu-chou(0.03%)
6 Kumage-gun Yakushima-chou(0.0214%)
7 Souraku-gun Seika-chou(0.0159%)
8 Tenri-shi(0.0141%)
9 Moriya-shi(0.0101%)
10 Toshima-ku(0.00792%)
11 Kanoya-shi(0.00695%)
12 Amami-shi(0.00694%)
13 Kitamoto-shi(0.00671%)
14 Obihiro-shi(0.00437%)
15 Saitama-shi Kita-ku(0.00431%)
16 Iwamizawa-shi(0.00377%)
17 Taitou-ku(0.00373%)
18 Takasaki-shi(0.00359%)
19 Yao-shi(0.00346%)
20 Muroran-shi(0.00329%)
21 Nishitoukyou-shi(0.00316%)
22 Yatsushiro-shi(0.00293%)
23 Oomuta-shi(0.00285%)
24 Sendai-shi Izumi-ku(0.0028%)
25 Itami-shi(0.00263%)
26 Sapporo-shi Nishi-ku(0.0024%)
27 Ageo-shi(0.00235%)
28 Kishiwada-shi(0.00224%)
29 Higashioosaka-shi(0.00187%)
30 Morioka-shi(0.00158%)
31 Niigata-shi(0.00156%)
32 Kawagoe-shi(0.00155%)
33 Kagoshima-shi(0.0015%)
34 Kashiwa-shi(0.00147%)
35 Machida-shi(0.00135%)
36 Suginami-ku(0.00133%)
37 Ichikawa-shi(0.00132%)
38 Toyonaka-shi(0.00131%)
39 Sakai-shi(0.00114%)
40 Kawaguchi-shi(0.00107%)
41 Funabashi-shi(0.000953%)
42 Adachi-ku(0.000917%)
43 Sagamihara-shi(0.000829%)