In Croatia, Heruc families are Croats (from Krizevci ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Krizevci.
Prevalence
About 30 people with faimily name Heruc live in Croatia today, in 14 households. There were 70 of them in the middle of the past century, and their number decreased significantly. They are located in threee Croatian counties, two cities and 6 other places, mostly in Krizevci (20), Zagreb (<10), Karane (<5), Veliki Raven (<5), and in Sveti Ivan Zabno in Krizevci area (<5).
Outside Croatia
Family name Heruc is present in two countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.