Sedlo 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 (Bosanski Brod area) and in Slavonski Brod.
Prevalence
About 110 people with faimily name Sedlo live in Croatia today, in 40 households. They are located in 6 Croatian counties, in 6 cities and 8 other places, mostly in Slavonski Brod (70), Orahovica (15), in Sibinj (<10) and Bartolovci (<10) in Slavonski Brod area, and in Kasina (<10).
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.