Demographics of Rio de Janeiro
Rio de Janeiro City is home to more than 6 million people, accounting for about 35% of the population of Rio de Janeiro State. Portuguese remains the most widely spoken language and Rio de Janeiro is the second city in the Portuguese speaking world.
Rio Grande do Norte
The Brazilian Institute of Geography and Statistics estimates that the population of Rio Grande do Norte was 3,168,133 on December 1, 2010, a 14.3% increase since the 2000 census. Multiracial people make up 52.48% of the total population. The second largest group composed by white people was 41.15% of the total population, following by black people (5.24%), Asian people (1.04%) and indigenous people 
0.08%.