In Croatia, Osojnički families are Croats (from Vrbovsko ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Vrbovsko. In Plešivica in Vrbovsko every third inhabitant had the family name Osojnički.
Prevalence
About 50 people with faimily name Osojnički live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number remains constant. They are only located in in 6 Croatian cities and 7 other places, mostly in Klanac (15), Zagreb (10), Rijeka (<10), Plemenitas (<10), and in Greda (<10).
Outside Croatia
Family name Osojnički is present in three countries on two continents. The family name "Osojnicki " 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 1902 in source Hartmann's General List of Apartments in Zagreb.