In Croatia, Harth families are Croats (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek.
Prevalence
Only a few people with faimily name Harth live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number remains constant. They are only located in in one Croatian city and another small place , mostly in Osijek (<5) and Bilje in Osijek area (<5).