Markuz families are Croats and they are mostly from Glina area. In the past century, relatively most of Croatian residents bearing this family name were born in Glina area and in Sisak. In Roženica in Glina area every ninth inhabitant had the family name Markuz.
Prevalence
About 90 people with faimily name Markuz live in Croatia today, in 40 households. They are located in 6 Croatian counties, in 6 cities and 11 other places, mostly in Rozenica in Glina area (40), Greda (15), Zagreb (<10), Sisak (<10), and in Bjelovar (<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.