In Croatia, Moćnik families are Croats (from Bjelovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Bjelovar.
Prevalence
About 10 people with faimily name Moćnik live in Croatia today, in 10 households. There were 60 of them in the middle of the past century, and their number decreased significantly. They are located in four Croatian counties, four cities and threee other places, mostly in Zagreb (<10), Sesvete (<5), Cakovec (<5), Gornje Plavnice (<5), and in Bregi Zabocki (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.