In Croatia, Nikoliš families are mainly Croats (from Petrinja ), less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Petrinja. In Slana in Petrinja every sixtieth inhabitant had the family name Nikoliš.
Prevalence
About 30 people with faimily name Nikoliš live in Croatia today, in 19 households. There were 110 of them in the middle of the past century, and their number decreased significantly. They are located in 6 Croatian counties and 8 other places, mostly in Zagreb (10), Petrinja (<10), Jagodnjak in Beli Manastir area (<10), Karlovac (<5), and in Gora (<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.