Gerenčir families are generally Croats and they are mostly from Slatina , rarely Hungarians. In the past century, relatively most of Croatian residents bearing this family name were born in Slatina and Zagreb. In Gornji Miholjac in Slatina every sixth inhabitant had the family name Gerenčir.
Prevalence
About 110 people with faimily name Gerenčir live in Croatia today, in 50 households. There were 180 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 10 Croatian counties, in 11 cities and 19 other places, mostly in Slatina (35), Sesvete (15), Zagreb (<10), Gornji Miholjac (<10), and in Pula (<10).
Outside Croatia
Family name Gerenčir is present in 6 countries on three continents. The family name "Gerencir " is used by some 60 people in the United States.
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.