In Croatia, Tančak families are Croats (from Samobor ). In the past century, relatively most of Croatian residents bearing this family name were born in Samobor and Zagreb.
Prevalence
About 50 people with faimily name Tančak live in Croatia today, in 19 households. There were 30 of them in the middle of the past century, and their number increased by 100 percent. They are located in four Croatian counties, four cities and two other places, mostly in Podvrh (10), Samobor (10), Bregana (<10), Nova Gradiska (<10), and in Zagreb (<10).