Peru is the fourth most populous country in South America.

An excerpt from the article 43 facts about Peru

Its population is approximately 28 million people. Every fourth citizen of the country lives in Lima. Other cities with over 200.000 inhabitants are Arequipa, Trujillo, Chiclayo, Piura, Iquitos, Chimbote, Cuzco, and Huancayo. Men in Peru live on average 62 years and women 66 years.