In Croatia, Mlinarek families are Croats (from Novi Marof area ). In the past century, relatively most of Croatian residents bearing this family name were born in Novi Marof area and in Varazdin.
Prevalence
About 60 people with faimily name Mlinarek live in Croatia today, in 20 households. There were 70 of them in the middle of the past century, and their number decreased by 10 percent. They are only located in in 8 Croatian cities and 7 other places, mostly in Scepanje in Novi Marof area (20), Zagreb (15), Vrbovec (<10), Dugo Selo (<5), and in Krk on the Island of Krk (<5).
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.