In Croatia, Sekušek families are Croats (from Pregrada ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Krapina area.
Prevalence
Only a few people with faimily name Sekušek live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in two Croatian cities only, in Zagreb (<5) and Benkovo (<5).
Outside Croatia
Family name Sekušek 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 1902 in source Hartmann's General List of Apartments in Zagreb.