In Croatia, Fember families are almost entirely Croats (from Ozalj ), very rarely Slovenes. In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Ozalj.
Prevalence
About 40 people with faimily name Fember live in Croatia today, in 16 households. There were 30 of them in the middle of the past century, and their number increased by 20 percent. They are located in threee Croatian counties, four cities and 5 other places, mostly in Karlovac (15), Ozalj (15), Zagreb (<10), Pozun (<5), and in Rijeka (<5).
Outside Croatia
Family name Fember is present in 6 countries on four continents.