In Croatia, Gumbarević families are almost entirely Croats (from Slatina ), barely Slovaks (from Ilok ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Slatina and Virovitica. In Sladojevci in Slatina every twentieth inhabitant had the family name Gumbarević.
Prevalence
About 60 people with faimily name Gumbarević live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number increased by 30 percent. They are located in 6 Croatian counties, in 6 cities and 6 other places, mostly in Slatina (25), Sladojevci (10), Ilok (<10), Rijeka (<5), and in Mavrinci in Rijeka area (<5).
Outside Croatia
Family name Gumbarević is present in two countries on two continents. The family name "Gumbarevic " is used by small number of people in the United States.
