In Croatia, Krupec families are Croats (from Vrbovec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovec area and in Bjelovar.
Prevalence
About 20 people with faimily name Krupec live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and threee other places, mostly in Graberec in Vrbovec area (10), Zagreb (<10), Dubrava in Vrbovec area (<5), Josipovac (<5), and in Stara Subocka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1701 in source Catholic Church Parish Records.