In Croatia, Krnjac families are Croats (from Vrlika ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrlika and Sinj. In Podosoje in Vrlika every twentieth inhabitant had the family name Krnjac.
Prevalence
About 30 people with faimily name Krnjac live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number increased by 80 percent. They are located in five Croatian cities only: in Podosoje (25), Rijeka (<5), Kastel Kambelovac (<5), Zagreb (<5), and in Djakovo (<5).
Outside Croatia
Family name Krnjac is present in 14 countries worldwide. "Crnjac " is used by small number of people in Germany , small number in the United States , and small number of people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.