Suvajac families are podjednako Croats (the family name originates from Bosnian Posavina ) and Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Kotor Varos area) and in Doboj, Bosnia (Doboj area). In Liplje in Bosnian Krajina every tenth inhabitant had the family name Suvajac.
Prevalence
About 130 people with faimily name Suvajac live in Croatia today, in 60 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 25 cities and 10 other places, mostly in Zagreb (30), Rijeka (20), Osijek (<10), Labin (<10), and in Ploce (<10).
Outside Croatia
Family name Suvajac is present in 12 countries on four continents.
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.