In Croatia, Janjušić families are generally Croats (from Novska area ), very rarely Macedonians, and . In the past century, relatively most of Croatian residents bearing this family name were born in Novska and in Novska area. In Mioči in Middle Bosnia nearly every inhabitant had the family name Janjušić.
Prevalence
About 40 people with faimily name Janjušić live in Croatia today, in 19 households. There were 40 of them in the middle of the past century, and their number remains constant. They are only located in in 7 Croatian cities and 6 other places, mostly in Pula (10), Zagreb (<10), Jasenovac in Novska area (<10), Malinska on the Island of Krk (<5), and in Satnica Djakovacka in Djakovo area (<5).
Outside Croatia
Family name Janjušić is present in two countries on two continents. The family name "Janjusic " is used by 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 1942 in source Phone Directory of the Independent State of Croatia 1942.