Etymology and distribution of 空.

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!

「空」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 空

Distribution of 空
Ranking
1 Hiroshima-ken(About 600)
2 Hokkaidou(About 200)
3 Hyougo-ken(About 200)
4 Oosaka-fu(About 140)
5 Fukuoka-ken(About 120)
6 Yamaguchi-ken(About 110)
7 Okayama-ken(About 70)
8 Toyama-ken(About 70)
9 Ishikawa-ken(About 60)
10 Gifu-ken(About 60)
11 Aichi-ken(About 40)
12 Toukyou-to(About 40)
13 Kyouto-fu(About 30)
14 Fukui-ken(About 20)
14 Kanagawa-ken(About 20)
14 Chiba-ken(About 20)
17 Kagawa-ken(About 20)
17 Ooita-ken(About 20)
19 Shizuoka-ken(About 10)
19 Nara-ken(About 10)
19 Saitama-ken(About 10)
19 Wakayama-ken(About 10)
23 Ibaraki-ken(About 10)
23 Shimane-ken(About 10)
23 Saga-ken(About 10)
26 Kagoshima-ken(Very rare)
26 Gunma-ken(Very rare)
26 Shiga-ken(Very rare)
26 Okinawa-ken(Very rare)
26 Tochigi-ken(Very rare)
26 Mie-ken(Very rare)