In Croatia, Slanac families are almost entirely Croats (from Ozalj ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Ozalj.
Prevalence
About 50 people with faimily name Slanac live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number decreased by 20 percent. They are only located in in 6 Croatian cities and 8 other places, mostly in Zagreb (10), Vodostaj (10), Petrinja (<10), Durlinci (<10), and in Levkusje (<10).
Outside Croatia
Family name Slanac is present in four countries on three continents. The family name "Slanac " is used by some 60 people in Argentina , small number in the United States , and small number of people in Germany.
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.