In Croatia, Zeks families are Croats (from Slatina area ). In the past century, relatively most of Croatian residents bearing this family name were born in Slatina area and in Osijek.
Prevalence
About 10 people with faimily name Zeks live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only threee naselja i to in Cadjavicki Lug in Slatina area (10), Osijek (<5), and in Dugo Selo (<5).