5 Most Populated Cities in South America

2. Buenos Aires, Argentina 

Population: 15.62 million

Buenos Aires is the capital of Argentina and lies on the shore of the Río de la Plata, 150 miles from the Atlantic Ocean. The city is one of South America’s most important ports. It is also Argentina’s center of commerce, industry, politics, culture, and technology. With a population of over 15 million, Buenos Aires is at the second position on our list of the most populated cities in South America.