In Croatia, Herc families are Croats (from Prelog area ). In the past century, relatively most of Croatian residents bearing this family name were born in Prelog area and in Cakovec. In Donji Mihaljevec in Prelog area every thirtieth inhabitant had the family name Herc.
Prevalence
About 60 people with faimily name Herc live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 7 cities and 9 other places, mostly in Sveta Marija (15) and Kotoriba (<10) in Prelog area, Beli Manastir (<10), Zagreb (<10), and in Rijeka (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.