Biškup families are Croats and they are mostly from Ivanec. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Zagreb. In Borje in Varazdinske Toplice area every fourth inhabitant had the family name Biškup.
Prevalence
About 1100 people with faimily name Biškup live in Croatia today, in 390 households. There were 1000 of them in the middle of the past century, and their number increased by 0 percent. They are located in the most of Croatian counties, in 30 cities and 116 other places, mostly in Zagreb (160), Radovan (110), Varazdin (85), Podevcevo (40), and in Zlogonje (35).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1679 in source Catholic Church Parish Records.