In Croatia, Rošker families are generally Croats (from Krizevci ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Krizevci and Osijek.
Prevalence
About 10 people with faimily name Rošker live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in four Croatian counties, four cities and two other places, mostly in Krizevci (10), Pucisca on the Island of Brac (<5), Osijek (<5), Zagreb (<5), and in Reka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.