In Croatia, Krošnjak families are Croats (from Pazin area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pazin and Rijeka.
Prevalence
About 20 people with faimily name Krošnjak live in Croatia today, in 7 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only threee naselja i to in Gologorica in Pazin area (10), Rovinj (<10), and in Rijeka (<10).