Geography of Peru of 1.57%. Lima forms part of the Largest cities in the Americas, and holds 31.7% of the country's population. The dense concentration of the population size of Peru is 25 people/km² or 57/mi². Lima is a pull factor that draws millions of Peruvians from the suburbs to the capital. This urban inland migration is the result of sprawling around Lima. These sprawling places are known as “Pueblos Jóvenes”. The young towns and Lima make up the metropolitan area that extend 125 miles. The urban growth brings issues to the metropolitan area and the environment. Lima is the most polluted city
Maynas Province, Peru Maynas Province, Peru Maynas is a province in the Loreto Region in northeastern Peru. Its capital, Iquitos, is also Loreto's regional capital and the largest city in the Peruvian Amazon Rainforest. The Maynas Province is bordered by Ecuador on the northwest, Colombia on the north, northeast and east, the Mariscal Ramón Castilla and Requena provinces on the south, and the Loreto Province on the southwest. According to the 1993 Census, the Maynas Province has a population of 393,496 inhabitants, 50.6% of which (199,209) are male and 49.4% (194,287) are female. As of 2005, the Instituto Nacional de Estadística e Informática