In Croatia, Krnjaja families are generally Serbs, rarely Croats (from Samobor ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Obrovac.
Prevalence
About 20 people with faimily name Krnjaja live in Croatia today, in 15 households. There were 110 of them in the middle of the past century, and their number decreased significantly. They are located in 6 Croatian counties, in 7 cities and two other places, mostly in Sisak (<5), Zlatar (<5), Nadvoda (<5), Zagreb (<5), and in Samobor (<5).
Outside Croatia
Family name Krnjaja is present in five countries on two continents.