In Croatia, Maslač families are Croats (from Zupanja area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Vinkovci.
Prevalence
About 40 people with faimily name Maslač live in Croatia today, in 17 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 9 cities and 8 other places, mostly in Zagreb (15), Cerna in Zupanja area (<10), Ogulin (<10), Andrijasevci in Vinkovci area (<10), and in Vrsar in Rovinj area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1938 in source Emigration Commission Zagreb.