Goršćak families are Croats and they are mostly from Karlovac. In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Zagreb. In places Goršćaki and Cerovac Vukmanićki in Karlovac every sixth inhabitant had the family name Goršćak.
Prevalence
About 110 people with faimily name Goršćak live in Croatia today, in 50 households. There were 110 of them in the middle of the past century, and their number remains constant. They are located and 11 other Croatian places, mostly in Karlovac (50), Cerovac Vukmanicki (20), Gorscaki (15), Tuskani (<10), and in Rijeka (<5).
Outside Croatia
Family name Goršćak (including: Gorscak , Gorschak ) is present in 11 countries on three continents. The family name "Gorscak " is used by some 100 people in the United States and small number in Canada.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.