Šestić families are often Croats and they are mostly from Zupanja area , rarely Serbs and Bosniaks (from Banja Luka area, Bosnia). In the past century, relatively most of Croatian residents bearing this family name were born in Zupanja area and in Zagreb.
Prevalence
About 180 people with faimily name Šestić live in Croatia today, in 90 households. There were 250 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 20 cities and 22 other places, mostly in Zagreb (60), Racinovci in Zupanja area (30), Tucepi in Makarska area (15), Osijek (<10), and in Luzani in Pleternica area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.