Last Name :
Last Name in Japanese Kanji(Hiragana) :
宇 meaning eaves, roof, house, heaven./ 都 meaning metropolis, capital, all, everything./ 木 meaning tree, wood.
Estimated Population in Japan :
Population Rank :
4847 out of 10,000 entries
Other Readings of Utsugi(宇都木)：
Top 5 populations of Utsugi(宇都木) by prefecture：
1 : Ibaraki
2 : Tokyo
3 : Chiba
4 : Tochigi
5 : Saitama
How to Find The Origin of Japanese Last Name
To check its roots, you can use the website, "myoji-yurai.net".
Using this site, you can check the roots of Japanese last name made after A.D.600.
It depends on last names, but you can see some last names comes from China, Korea, Taiwan and so on. To check its roots, you need to copy the last name's Kanji.
It is used by searching on the website. Also, this website is in Japanese language at all. When you use it, you need to translate by yourself.
You can check its process here>>