Žitnik families are usually Croats and they are mostly from Klanjec , barely Slovenes. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Klanjec.
Prevalence
About 190 people with faimily name Žitnik live in Croatia today, in 70 households. There were 180 of them in the middle of the past century, and their number increased by 0 percent. They are located in the most of Croatian counties, in 18 cities and 11 other places, mostly in Zagreb (95), Lucelnica Tomasevecka (20), Dubrovnik (15), Split (<10), and in Bjelovar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.