Suepan's population in the 2011 census was composed primarily of Serbs (48.9%) followed by Montenegrins (23.7%), also known as the "Black Mountain People" that are South Slavic ethnic group native there.
Serbs 48.9% Montenegrins 23.7% Montenegrins (Montenegrin: Crnogorci / , pronounced [tsrnoortsi or [tsrnoortsi, lit. '"Black Mountain People"') are a South Slavic ethnic group native to Montenegro. 
