Šumberac families are Croats and they are mostly from Labin area. In the past century, relatively most of Croatian residents bearing this family name were born in Labin and Pula. In Santalezi in Labin area every fifth inhabitant had the family name Šumberac.
Prevalence
About 190 people with faimily name Šumberac live in Croatia today, in 70 households. There were 40 of them in the middle of the past century, and their number multiplied. They are located in four Croatian counties, in 6 cities and 16 other places, mostly in Nedescina in Labin area (40), Labin (35), Presika (25), Santalezi in Labin area (15), and in Pula (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.