Hađar families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar area and in Zagreb.
Prevalence
About 70 people with faimily name Hađar live in Croatia today, in 30 households. There were 130 of them in the middle of the past century, and their number halved. They are located in 8 Croatian counties, in 7 cities and 13 other places, mostly in Petrova Gora in Zlatar area (25), Zagreb (10), Varazdin (<10), Rijeka (<5), and in Zapresic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.