Sedlić families are Croats and they are mostly from Bosnian Posavina. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Derventa area) and in Zagreb.
Prevalence
About 280 people with faimily name Sedlić live in Croatia today, in 100 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 20 cities and 28 other places, mostly in Zagreb (60), Slavonski Brod (55), Oriovac in Pleternica area (25), Sesvete (15), and in Bakar (15).
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.