In Croatia, Havoj families are Croats (from Zlatar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zlatar.
Prevalence
About 20 people with faimily name Havoj live in Croatia today, in 12 households. There were 40 of them in the middle of the past century, and their number halved. They are located in 6 Croatian counties, in 6 cities and threee other places, mostly in Zagreb (10), Bocaki in Zlatar area (<5), Petrusevec (<5), Djurdjenovac in Nasice area (<5), and in Belec (<5).