In Croatia, Hajderer families are Croats (from Klanjec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zapresic.
Prevalence
About 10 people with faimily name Hajderer live in Croatia today, in three households only. They are located in only four naselja i to in Radakovo in Zabok area (<5), Dubravica in Klanjec area (<5), Marija Magdalena in Zapresic area (<5), and in Vucilcevo in Klanjec area (<5).