In Croatia, Hačko families are Croats (from Jastrebarsko ). In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko and Zagreb. In Breznik Plešivički in Jastrebarsko every fourth inhabitant had the family name Hačko.
Prevalence
About 40 people with faimily name Hačko live in Croatia today, in 11 households. There were 50 of them in the middle of the past century, and their number decreased by 20 percent. They are located in only four naselja i to in Breznik Plesivicki (20), Zagreb (10), Toplice (<10), and in Jastrebarsko (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1924 in source Emigration Commission Zagreb.