Katnić families are Croats and they are mostly from Crikvenica. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Crikvenica.
Prevalence
About 100 people with faimily name Katnić live in Croatia today, in 50 households. There were 40 of them in the middle of the past century, and their number more than doubled. They are located in 6 Croatian counties, in 8 cities and 7 other places, mostly in Crikvenica (60), Grizane-Belgrad in Novi Vinodolski area (<10), Rijeka (<10), Zagreb (<10), and in Karlovac (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.