In Croatia, Hajdek families are almost entirely Croats (from Oroslavje area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Oroslavje area.
Prevalence
About 40 people with faimily name Hajdek live in Croatia today, in 17 households. There were 50 of them in the middle of the past century, and their number decreased by 10 percent. They are only located in four Croatian cities and four other places, mostly in Lovrecan in Oroslavje area (20), Zagreb (<10), Vinkovci (<10), Sesvete (<5), and in Sveti Kriz Zacretje in Zabok area (<5).
