In Croatia, Šicko families are Croats (from Jastrebarsko area ). In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko area and in Zagreb.
Prevalence
About 10 people with faimily name Šicko live in Croatia today, in four households only. There were 40 of them in the middle of the past century, and their number decreased significantly. They are located in only two naselja i to in Kupinec in Jastrebarsko area (10) and Kupinecki Kraljevec (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1929 in source Emigration Commission Zagreb.