In Croatia, Grgošević families are generally Croats (from Osijek area ), very rarely Serbs, and barely Czechs (from Vukovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek area and in Grubisno Polje.
Prevalence
About 50 people with faimily name Grgošević live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 7 Croatian counties, in 9 cities and 8 other places, mostly in Osijek (10), Cepin in Osijek area (<10), Donja Moticina in Nasice area (<10), Valpovo (<10), and in Zagreb (<5).
Outside Croatia
Family name Grgošević is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.