In Croatia, Mihaci families are Croats (from Bjelovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Zagreb.
Prevalence
About 20 people with faimily name Mihaci live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian cities only, in Galovac (10) and Zagreb (<10).
Outside Croatia
Family name Mihaci (including: Michachi , Mihacy ) is present in 6 countries on three continents. "Mihacy " is used by small number of people in the United States.