Donora, PA has a population of 4,679 and is the 6,759th largest city in the United States. The population density is 2,463 per sq mi which is 789% higher than the Pennsylvania average and 2619% higher than the national average. The median age in Donora is 40 which is approximately 3% lower than the Pennsylvania average of 41. In Donora, 51% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 86% of Donora residents were born in Pennsylvania, 12% were born out of state, 1% were born outside of the United States and 1% were foreign born.