Mostovac families are Croats and they are mostly from Bjelovar area. In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Zagreb.
Prevalence
About 60 people with faimily name Mostovac live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 8 Croatian counties, in 7 cities and 10 other places, mostly in Zagreb (20), Vrbica in Bjelovar area (10), Bjelovar (10), Cavle in Rijeka area (<10), and in Gornje Plavnice (<5).
Outside Croatia
Family name Mostovac is present in 6 countries on four continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.