In Croatia, Sečić families are Croats (from Karlovac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and in Karlovac area.
Prevalence
About 40 people with faimily name Sečić live in Croatia today, in 19 households. There were 50 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in in 8 Croatian cities and four other places, mostly in Draganic in Karlovac area (10), Zagreb (10), Slavonski Brod (<10), Velika Gorica (<5), and in Karlovac (<5).
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.