Etymology and distribution of 久国.

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!

「久国」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 久国

Distribution of 久国
Ranking
1 Komatsushima-shi(0.0798%)
2 Kume-gun Kumenan-chou(0.0473%)
3 Minoo-shi(0.0242%)
4 Kumage-gun Tabuse-chou(0.02%)
5 Awaji-shi(0.0128%)
6 Nabari-shi(0.0106%)
7 Akitakata-shi(0.00954%)
8 Oosaka-shi Fukushima-ku(0.00934%)
9 Niimi-shi(0.00914%)
10 Sasayama-shi(0.00801%)
11 Moriyama-shi(0.00702%)
12 Sumoto-shi(0.00668%)
13 Izumiootsu-shi(0.00628%)
14 Kaidzuka-shi(0.00526%)
15 Oosaka-shi Nishinari-ku(0.00506%)
16 Izumisano-shi(0.00472%)
17 Ikeda-shi(0.00467%)
18 Koube-shi Kita-ku(0.00441%)
19 Hiroshima-shi Naka-ku(0.00435%)
20 Oosaka-shi Suminoe-ku(0.00425%)
21 Koube-shi Nada-ku(0.00423%)
22 Iga-shi(0.00398%)
23 Kawachinagano-shi(0.00373%)
24 Hiroshima-shi Minami-ku(0.00369%)
25 Oosaka-shi Higashiyodogawa-ku(0.00351%)
26 Mihara-shi(0.0033%)
27 Kawasaki-shi Tama-ku(0.00318%)
28 Toyonaka-shi(0.00263%)
29 Takaradzuka-shi(0.00224%)
30 Ibaraki-shi(0.002%)
31 Kakogawa-shi(0.0017%)
32 Tokushima-shi(0.00167%)
33 Suita-shi(0.00155%)
34 Fukui-shi(0.00155%)
35 Kure-shi(0.00132%)
36 Ichinomiya-shi(0.00123%)