Gabaj families are Croats and they are mostly from Koprivnica area. In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and in Koprivnica area.
Prevalence
About 180 people with faimily name Gabaj live in Croatia today, in 80 households. There were 250 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 13 cities and 32 other places, mostly in Koprivnica (30), Zagreb (20), in Legrad (20) and Koprivnicki Bregi (10) in Koprivnica area, and in Hampovica in Djurdjevac area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.