Etymology and distribution of 徳成.

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
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Popuration of 徳成.

カンマ区切りで複数の名字を指定できます。

Etymology of 徳成

Distribution of 徳成
Ranking
1 Ishikawa-ken(About 70)
2 Hokkaidou(About 40)
3 Fukuoka-ken(About 20)
4 Kumamoto-ken(About 20)
4 Kanagawa-ken(About 20)
6 Chiba-ken(About 10)
6 Saitama-ken(About 10)
6 Toyama-ken(About 10)
9 Aichi-ken(About 10)
10 Oosaka-fu(Very rare)
10 Toukyou-to(Very rare)
10 Gunma-ken(Very rare)
10 Nagano-ken(Very rare)