In Croatia, Retkovac families are Croats (from Beli Manastir area ). In the past century, relatively most of Croatian residents bearing this family name were born in Beli Manastir area and in Zagreb.
Prevalence
About 30 people with faimily name Retkovac live in Croatia today, in 10 households. There were 50 of them in the middle of the past century, and their number decreased by 40 percent. They are located in four Croatian counties, four cities and threee other places, mostly in Zagreb (<10), Pula (<10), Vinkovci (<10), Osijek (<5), and in Draz in Beli Manastir area (<5).