In Croatia, Hak families are almost entirely Croats (from Nova Gradiska ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska and Pozega.
Prevalence
About 40 people with faimily name Hak live in Croatia today, in 18 households. There were 30 of them in the middle of the past century, and their number increased by 20 percent. They are located in 6 Croatian counties, in 6 cities and 7 other places, mostly in Zagreb (<10), Nova Gradiska (<10), Pozega (<5), Gracac in Knin area (<5), and in Eminovci in Pozega area (<5).
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.