Krnežić families are Croats and they are mostly from Jastrebarsko area. In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko area and in Karlovac. In Krnežići in Jastrebarsko area nearly every inhabitant had the family name Krnežić.
Prevalence
About 110 people with faimily name Krnežić live in Croatia today, in 50 households. There were 130 of them in the middle of the past century, and their number decreased by 20 percent. They are only located in in 6 Croatian cities and 13 other places, mostly in Karlovac (30), in Krnezici (25) and Krasic (15) in Jastrebarsko area, Vrhovac (10), and in Zagreb (<10).
Outside Croatia
Family name Krnežić is present in two countries on two 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.