Etymology and distribution of 北海.

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!

「北海」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 北海

Distribution of 北海
Ranking
1 Hiki-gun Tokigawa-machi(0.0583%)
2 Takaichi-gun Asuka-mura(0.0567%)
3 Kaho-gun Keisen-machi(0.0271%)
4 Kurate-gun Kurate-machi(0.0195%)
5 Kitakatsuragi-gun Ouji-chou(0.0179%)
6 Kyouto-shi Kita-ku(0.0179%)
7 Oosaka-shi Naniwa-ku(0.015%)
8 Susaki-shi(0.0124%)
9 Oosaka-shi Minato-ku(0.0122%)
10 Tsushima-shi(0.00884%)
11 Han'nan-shi(0.00785%)
12 Noogata-shi(0.00675%)
13 Sumoto-shi(0.00668%)
14 Katano-shi(0.00618%)
15 Iidzuka-shi(0.00615%)
16 Chikushino-shi(0.00588%)
17 Munakata-shi(0.00568%)
18 Itoshima-shi(0.00504%)
19 Fukuoka-shi Sawara-ku(0.00312%)
20 Suita-shi(0.0031%)
21 Nobeoka-shi(0.00283%)
22 Yamato-shi(0.00271%)
23 Kyouto-shi Ukyou-ku(0.00239%)
24 Odawara-shi(0.0022%)
25 Chigasaki-shi(0.00214%)
26 Kitakyuushuu-shi Yahatanishi-ku(0.00179%)
27 Yao-shi(0.00173%)
28 Kakogawa-shi(0.0017%)
29 Ootsu-shi(0.00144%)
30 Higashioosaka-shi(0.000934%)