In Croatia, Felker families are almost entirely Croats (from Rijeka ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Cakovec.
Prevalence
About 50 people with faimily name Felker live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 50 percent. They are only located in in 9 Croatian cities and 7 other places, mostly in Rijeka (25), Cakovec (<10), Zagreb (<5), Novo Selo na Dravi (<5), and in Soboli in Rijeka area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.