Štrlek families are Croats and they are mostly from Ivanec area. According to some sources they are from Varazdina area. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Varazdin.
Prevalence
About 200 people with faimily name Štrlek live in Croatia today, in 80 households. There were 180 of them in the middle of the past century, and their number increased by 10 percent. They are located in 8 Croatian counties, in 8 cities and 20 other places, mostly in Koretinec in Ivanec area (45), Varazdin (45), Zagreb (15), and in Calinec (15) and Greda (15) in Ivanec area.
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Štrlek is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.