In Croatia, Mus families are Croats (from Ozalj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica area and in Ozalj area.
Prevalence
About 20 people with faimily name Mus live in Croatia today, in 8 households. There were 40 of them in the middle of the past century, and their number halved. They are located in two Croatian counties, in one city and 5 other places, mostly in Sumece in Pleternica area (<10), Ribnik in Ozalj area (<5), Karlovac (<5), Lovcic in Pleternica area (<5), and in Veselici in Ozalj area (<5).
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.