Lupinski families are Croats and they are mostly from Pregrada area. In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia and in Pregrada area.
Prevalence
About 80 people with faimily name Lupinski live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties and 7 other places, mostly in Lupinjak in Pregrada area (30), Zagreb (15), Klenovec Humski in Pregrada area (15), Koprivnica (<10), and in Pakrac (<10).
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.