5 Most Populated Cities in South America

3. Rio de Janeiro, Brazil 

Population: 13.84 million

Rio de Janeiro is a port city on the Atlantic Ocean. It is commonly considered to be one of the world’s most beautiful cities. The city’s location and architecture are unique compared to other Brazilian cities. Between 2010 and 2018, Rio de Janeiro experienced consistent GDP growth, reaching its peak at over 363 billion Brazilian reals. However, from 2018 to 2020, the city’s GDP declined, dropping to around 331 billion Brazilian reals by 2020. In 2021, the city’s GDP climbed back up to 360 billion Brazilian reals.