In Croatia, Fajs families are Croats (from Cakovec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cakovec.
Prevalence
About 30 people with faimily name Fajs live in Croatia today, in 14 households. There were 30 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and threee other places, mostly in Zagreb (15), Nedelisce in Cakovec area (<10), Karlovac (<5), Sveta Marija in Prelog area (<5), and in Dragoslavec Selo in Cakovec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1938 in source Emigration Commission Zagreb.