Musija families are Croats and they are mostly from Zapresic. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zapresic.
Prevalence
About 70 people with faimily name Musija live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 7 cities and 6 other places, mostly in Zagreb (35), Makarska (<10), Varazdin (<5), and in Gornja Bistra (<5) and Donja Bistra (<5) in Oroslavje area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1933 in source Emigration Commission Zagreb.