In Croatia, Gec families are almost entirely Croats (from Sisak area ), barely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and in Sisak area.
Prevalence
About 80 people with faimily name Gec live in Croatia today, in 40 households. There were 130 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 7 Croatian counties, in 11 cities and 6 other places, mostly in Tisina Erdedska in Sisak area (25), Sisak (20), Hrastelnica (10), Karlovac (<10), and in Plesce (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.