Hermeščec families are Croats and they are mostly from Zagreb. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Ivanic-Grad.
Prevalence
About 70 people with faimily name Hermeščec live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in in 7 Croatian cities and 7 other places, mostly in Sesvete (20), Belovar (10), Zerjavinec (<10), Krizevci (<10), and in Ivanic-Grad (<5).
Outside Croatia
Family name Hermeščec is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.