Metropolis, IL has a population of 6,366 and is the 5,542nd largest city in the United States. The population density is 1,073 per sq mi which is 383% higher than the Illinois average and 1084% higher than the national average. The median age in Metropolis is 43 which is approximately 14% higher than the Illinois average of 37. In Metropolis, 53% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 45% of Metropolis residents were born in Illinois, 53% were born out of state, 0% were born outside of the United States and 2% were foreign born.