In Croatia, Bjelka families are Croats (from Nasice area ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice area and in Nasice.
Prevalence
About 10 people with faimily name Bjelka live in Croatia today, in 7 households. There were 20 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, threee cities and threee other places, mostly in Koska in Nasice area (10), Valpovo (<5), Harkanovci (<5), Cepin in Osijek area (<5), and in Umag (<5).