In Croatia, Heder families are Croats (from Slatina area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zadar.
Prevalence
About 30 people with faimily name Heder live in Croatia today, in 12 households. There were 20 of them in the middle of the past century, and their number increased by 30 percent. They are only located in four Croatian cities and two other places, mostly in Zagreb (15), Rijeka (<5), Zadar (<5), Kutina (<5), and in Veliki Rastovac in Slatina area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.