In Croatia, Fitnić families are Croats (from Ivanic-Grad area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cazma.
Prevalence
About 30 people with faimily name Fitnić live in Croatia today, in 13 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, four cities and 5 other places, mostly in Zagreb (<10), Sesvete (<10), Kutina (<5), Vrtlinska (<5), and in Ivanic-Grad (<5).
Outside Croatia
Family name Fitnić (including: Fitnic , Fitnich ) is present in three countries on two continents. "Fitnich " 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.