Mustač families are Croats and they are mostly from Prelog area. According to some sources they are from Sveti Kriz (Tuhelj). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Prelog area. In Sveta Marija in Prelog area every tenth inhabitant had the family name Mustač.
Prevalence
About 560 people with faimily name Mustač live in Croatia today, in 250 households. There were 590 of them in the middle of the past century, and their number decreased by 0 percent. They are located in almost all Croatian counties, in 25 cities and 57 other places, mostly in Sveta Marija in Prelog area (140), Zagreb (125), Spisic Bukovica in Virovitica area (25), Sesvete (20), and in Virovitica (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.