McKeesport, PA has a population of 19,529 and is the 2,229th largest city in the United States. The population density is 3,872 per sq mi which is 1297% higher than the Pennsylvania average and 4173% higher than the national average. The median age in McKeesport is 42 which is approximately 4% higher than the Pennsylvania average of 41. In McKeesport, 41% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 89% of McKeesport residents were born in Pennsylvania, 9% were born out of state, 0% were born outside of the United States and 2% were foreign born.