Hajsok families are Croats and they are mostly from Varazdin area. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and in Varazdin area.
Prevalence
About 130 people with faimily name Hajsok live in Croatia today, in 50 households. There were 110 of them in the middle of the past century, and their number increased by 30 percent. They are only located in in 9 Croatian cities and 17 other places, mostly in Tuzno in Varazdin area (30), Varazdin (15), Radovan (10), Zagreb (10), and in Vidovec in Varazdin area (10).
Outside Croatia
Family name Hajsok is present in three countries on two continents. The family name "Hajsok " is used by few people in the United States. "Haysok " is used by few people in the United States.
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.
