Imperial, PA has a population of 2,543 and is the 9,755th largest city in the United States. The population density is 802 per sq mi which is 189% higher than the Pennsylvania average and 785% higher than the national average. The median age in Imperial is 41 which is approximately 1% higher than the Pennsylvania average of 41. In Imperial, 47% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 69% of Imperial residents were born in Pennsylvania, 26% were born out of state, 2% were born outside of the United States and 3% were foreign born.