In Croatia, Lažnjak families are almost entirely Croats (from Velika Gorica ), barely Slovenes (also from Velika Gorica ). In the past century, relatively most of Croatian residents bearing this family name were born in Velika Gorica and Zagreb.
Prevalence
About 40 people with faimily name Lažnjak live in Croatia today, in 15 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, threee cities and four other places, mostly in Obrezina (20), Strmec Bukevski (<10), Zagreb (<10), Velika Gorica (<10), and in Novo Cice (<5).
Outside Croatia
Family name Lažnjak (including: Laznjak , Laznyak ) is present in three countries.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.