In Croatia, Tarnik families are almost entirely Croats (from Ivanic-Grad ), barely Bosniaks (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanic-Grad and in Zagreb. In Tarno in Ivanic-Grad every second inhabitant had the family name Tarnik.
Prevalence
About 40 people with faimily name Tarnik live in Croatia today, in 18 households. There were 60 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 9 cities and 5 other places, mostly in Zagreb (15), Tarno (<10), Ivanic-Grad (<10), Karlovac (<10), and in Rijeka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.