In Croatia, Joščak families are Croats (from Daruvar ). In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar and Pakrac.
Prevalence
About 20 people with faimily name Joščak live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only five Croatian places: in Daruvar (10), Doljani (<5), Bjelovar (<5), Velika Trnava in Garesnica area (<5), and in Miljanovac in Daruvar area (<5).