Jajčević families are Croats and they are mostly from Banja Luka area (Bosnia). In the past century, relatively most of Croatian residents bearing this family name were born in Banja Luka Region, Bosnia (Banja Luka area) and in Bosanian Posavina (Bosanska Gradiska area).
Prevalence
About 240 people with faimily name Jajčević 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 almost all Croatian counties, in 22 cities and 30 other places, mostly in Zagreb (50), Rijeka (20), Karlovac (20), Gvozd in Glina area (20), and in Vojnic in Duga Resa area (15).
Outside Croatia
At least two families with this surname emigrated from Croatia to the United States (1) and Germany (1). Family name Jajčević is present in 7 countries on three continents. The family name "Jajcevic " is used by small number of people in Australia and small number of people in the United States.
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.