2,905.3 inhabitants per square kilometre (7,525 /sq mi) (in the urban area). The last PNAD (National Research for Sample of Domiciles) census revealed the following percentage: 3,218,000 White people (79.94%), 477,000 Brown ( Multiracial ) people (11.84%), 300,000 Black people (7.45%), 19,000 Amerindian people (0.48%), 8,000 Asian people (0.20%). Porto Alegre was composed