According to the 2011 census, 62.9% of the total population of Kruevice are Serbs; 25.8% are Montenegrins (a South Slavic ethnic group native neither to Montenegro nor to Serbia); and the remaining 11.3% are undeclared.
Montenegrins (Montenegrin: Crnogorci / , pronounced [tsrnoortsi or [tsrnoortsi, lit. '"Black Mountain People"') are a South Slavic ethnic group native to Montenegro. 
