In Croatia, Flajnik families are generally Croats (from Vrbovsko ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Novi Vinodolski and Vrbovsko.
Prevalence
About 20 people with faimily name Flajnik live in Croatia today, in 11 households. There were 20 of them in the middle of the past century, and their number remains constant. They are only located in threee Croatian cities and four other places, mostly in Rijeka (<10), Zagreb (<10), Vrbovsko (<5), Jalsevec Nartski in Dugo Selo area (<5), and in Lukovdol (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Flajnik is present in 7 countries on three continents. The family name "Flajnik " is used by some 70 people in the United States and small number in Australia. "Flaynik " 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 1924 in source Emigration Commission Zagreb.