Žučko families are Croats and they are mostly from Pregrada area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Pregrada area. In Bojačno in Klanjec area every fourth inhabitant had the family name Žučko.
Prevalence
About 120 people with faimily name Žučko live in Croatia today, in 60 households. There were 190 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 9 Croatian counties, in 11 cities and 17 other places, mostly in Zagreb (55), in Kosnica (10) and Gora Kosnicka (10) in Pregrada area, Lekenik in Petrinja area (<10), and in Zlatar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.