Quentin, PA has a population of 582 and is the 18,616th largest city in the United States. The population density is 913 per sq mi which is 230% higher than the Pennsylvania average and 908% higher than the national average. The median age in Quentin is 35 which is approximately 13% lower than the Pennsylvania average of 41. In Quentin, 46% of the population over 15 years of age are married, 92% speak English and 3% speak Spanish. 88% of Quentin residents were born in Pennsylvania, 6% were born out of state, 0% were born outside of the United States and 6% were foreign born.