Mikačić families are Croats and they are mostly from Solin area. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Zagreb. In Korušce in Solin area every tenth inhabitant had the family name Mikačić.
Prevalence
About 170 people with faimily name Mikačić live in Croatia today, in 80 households. There were 140 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 12 cities and 10 other places, mostly in Split (65), Zagreb (45), Kastel Gomilica (10), Calinec in Ivanec area (10), and in Solin (<10).
Outside Croatia
Family name Mikačić (including: Mikacic , Mikacich ) is present in five countries on three continents. "Mikacich " is used by some 60 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 2007 in source Encyclopaedia of Croatian Surnames.