Drnić families are Croats and they are mostly from Novska area (Drenov Bok and Trebez). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and in Novska area. In Trebež in Novska area every fifth inhabitant had the family name Drnić.
Prevalence
About 70 people with faimily name Drnić live in Croatia today, in 30 households. There were 160 of them in the middle of the past century, and their number decreased significantly. They are located in 7 Croatian counties, in 10 cities and 8 other places, mostly in Zagreb (25), Puska in Novska area (15), Sisak (<10), Bok Palanjecki in Sisak area (<5), and in Donje Jame (<5).
Outside Croatia
Family name Drnić (including: Drnic , Dernick ) is present in 8 countries on four continents. "Dernick " is used by some 70 people in the United States and small number in Germany.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.