Etymology and distribution of 豊久.

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!

「豊久」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 豊久

Distribution of 豊久
Ranking
1 Buzen-shi(0.0873%)
2 Aki-gun Geisei-mura(0.0741%)
3 Itano-gun Matsushige-chou(0.0644%)
4 Mimasaka-shi(0.054%)
5 Minamiuwa-gun Ainan-chou(0.053%)
6 Katsuta-gun Shouou-chou(0.0298%)
7 Aki-shi(0.0294%)
8 Naruto-shi(0.0243%)
9 Yawata-shi(0.0192%)
10 Sakaiminato-shi(0.0188%)
11 Chikujou-gun Chikujou-machi(0.0166%)
12 Kikuchi-shi(0.0159%)
13 Tagawa-shi(0.0145%)
14 Abashirishi-chou Bihoro-chou(0.0143%)
15 Sukumo-shi(0.0129%)
16 Marugame-shi(0.011%)
17 Beppu-shi(0.01%)
18 Oosaka-shi Konohana-ku(0.00778%)
19 Katano-shi(0.00618%)
20 Kitanagoya-shi(0.00616%)
21 Nagaokakyou-shi(0.00567%)
22 Koube-shi Higashinada-ku(0.00555%)
23 Usa-shi(0.00536%)
24 Hiroshima-shi Naka-ku(0.00435%)
25 Hatsukaichi-shi(0.00424%)
26 Nagoya-shi Tenpaku-ku(0.00396%)
27 Yokohama-shi Kouhoku-ku(0.00394%)
28 Hiroshima-shi Minami-ku(0.00369%)
29 Yokohama-shi Izumi-ku(0.00348%)
30 Tsuyama-shi(0.00345%)
31 Kurume-shi(0.00316%)
32 Takatsuki-shi(0.00264%)
33 Fuchuu-shi(0.00262%)
34 Fukuoka-shi Higashi-ku(0.00247%)
35 Onomichi-shi(0.00208%)
36 Koube-shi Tarumi-ku(0.00207%)
37 Ooita-shi(0.00206%)
38 Ibaraki-shi(0.002%)
39 Hiratsuka-shi(0.00193%)
40 Saga-shi(0.00188%)
41 Tokushima-shi(0.00167%)
42 Tokorozawa-shi(0.00162%)
43 Okayama-shi(0.00138%)
44 Suginami-ku(0.00133%)
45 Kure-shi(0.00132%)
46 Hirakata-shi(0.00125%)
47 Oota-ku(0.000936%)
48 Higashioosaka-shi(0.000934%)
49 Himeji-shi(0.000799%)
50 Kumamoto-shi(0.00068%)