Sekulić families are mainly Croats and they are mostly from Lika , often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Slavonski Brod. In Blinja in Petrinja every third inhabitant had the family name Sekulić.
Prevalence
About 1500 people with faimily name Sekulić live in Croatia today, in 720 households. There were 2000 of them in the middle of the past century, and their number decreased by 20 percent. They are located in all Croatian counties, in 62 cities and 156 other places, mostly in Zagreb (320), Slavonski Brod (70), Rijeka (65), Osijek (60), and in Sisak (40).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over sixty times, the first time 1749 in source 18th Century Census.