In Croatia, Šilek families are Croats (from Bjelovar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar area.
Prevalence
About 10 people with faimily name Šilek live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only threee Croatian places: in Severin (<5) and Slovinska Kovacica (<5) in Bjelovar area, and in Bjelovar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.