Herjavec families are Croats and they are mostly from Varazdin. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Zagreb.
Prevalence
About 110 people with faimily name Herjavec live in Croatia today, in 50 households. There were 90 of them in the middle of the past century, and their number increased by 20 percent. They are located in 9 Croatian counties, in 11 cities and 20 other places, mostly in Varazdin (20), Zagreb (20), Kutina (15), Strigova in Mursko Sredisce area (<10), and in Vuksin Sipak (<10).
Outside Croatia
Family name Herjavec is present in 7 countries on two continents. "Heryavec " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1924 in source Emigration Commission Zagreb.