Moštak families are Croats and they are mostly from Donja Stubica area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Donja Stubica area.
Prevalence
About 130 people with faimily name Moštak live in Croatia today, in 50 households. There were 110 of them in the middle of the past century, and their number increased by 20 percent. They are located in 6 Croatian counties, in 9 cities and 14 other places, mostly in Zagreb (45), Dubovec in Donja Stubica area (35), Donja Stubica (15), Hum Zabocki (<10), and in Gornja Pacetina (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.