Rio’s population is growing rapidly. Since the 1950s, the population of the city has more than trebled. As a result, Rio de Janeiro has an estimated 2020 population of 6.48 million. The metro population (surrounding area under the same local government) of Rio de Janeiro is much larger, however, with 13.5 million residents in 2021.

Rio de Janeiro – population – Source Metrotrends – Data Source: United Nations – World Population Prospects

Migration

As Rio has developed, it has attracted migrants from within Brazil and from abroad. One of the largest groups of migrants is the Portuguese people. Rio is the largest Portuguese city outside of Portugal. Rural to urban migration has been a significant cause of population growth. Migrants are pulled to the city because of better education and employment opportunities along with improved living conditions. On the other hand, migrants have been pushed from rural areas due to factors such as mechanisation (use of machinery) on farms, poor living conditions and the lack of employment opportunities. More recently, Rio has attracted migrants from South Korea and China who seek business opportunities.

Natural Increase

The high rate of migration into Rio has led to a youthful population in the city. As a result of this, the city has a high rate of natural increase due to the high birth rate and relatively low death rate.