Etymology and distribution of 常岡.

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!

「常岡」さんの名字の分布数。

カンマ区切りで複数の名字を指定できます。

Etymology of 常岡

Distribution of 常岡
Ranking
1 Fukuoka-ken(About 500)
2 Hyougo-ken(About 200)
3 Saitama-ken(About 200)
4 Yamaguchi-ken(About 200)
5 Oosaka-fu(About 130)
6 Toukyou-to(About 110)
7 Nagasaki-ken(About 90)
8 Hiroshima-ken(About 70)
9 Nara-ken(About 70)
10 Chiba-ken(About 60)
11 Kanagawa-ken(About 30)
11 Kyouto-fu(About 30)
13 Fukui-ken(About 20)
13 Aichi-ken(About 20)
15 Gunma-ken(About 20)
15 Shiga-ken(About 20)
17 Kagoshima-ken(About 10)
17 Shizuoka-ken(About 10)
17 Kumamoto-ken(About 10)
17 Yamanashi-ken(About 10)
17 Miyazaki-ken(About 10)
17 Wakayama-ken(About 10)
23 Nagano-ken(About 10)
23 Ishikawa-ken(About 10)
23 Mie-ken(About 10)
26 Aomori-ken(Very rare)
26 Ibaraki-ken(Very rare)
26 Shimane-ken(Very rare)
26 Ooita-ken(Very rare)
26 Saga-ken(Very rare)