Hajduković families are mainly Croats and they are mostly from Djurdjevac area , often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Senj area. In Prokike in Senj area every seventh inhabitant had the family name Hajduković.
About 420 people with faimily name Hajduković live in Croatia today, in 200 households. There were 710 of them in the middle of the past century, and their number decreased by 40 percent. They are located in almost all Croatian counties, in 35 cities and 59 other places, mostly in Zagreb (40), Osijek (35), Bjelovar (30), Rijeka (25), and in Dalj in Vinkovci area (20).