In Croatia, Želežnjak families are Croats (from Cakovec ). In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec and in Cakovec area.
Prevalence
About 40 people with faimily name Želežnjak live in Croatia today, in 14 households. There were 80 of them in the middle of the past century, and their number halved. They are located in four Croatian counties, threee cities and 6 other places, mostly in Cakovec (15), Mihovljan (<10), Nedelisce in Cakovec area (<10), Varazdin (<5), and in Gornji Kucan (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.