Gastonville, PA has a population of 2,765 and is the 9,213th largest city in the United States. The population density is 1,014 per sq mi which is 266% higher than the Pennsylvania average and 1019% higher than the national average. The median age in Gastonville is 53 which is approximately 30% higher than the Pennsylvania average of 41. In Gastonville, 65% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 90% of Gastonville residents were born in Pennsylvania, 9% were born out of state, 2% were born outside of the United States and 0% were foreign born.