Richboro, PA has a population of 6,357 and is the 5,546th largest city in the United States. The population density is 1,452 per sq mi which is 424% higher than the Pennsylvania average and 1503% higher than the national average. The median age in Richboro is 48 which is approximately 17% higher than the Pennsylvania average of 41. In Richboro, 74% of the population over 15 years of age are married, 88% speak English and 1% speak Spanish. 74% of Richboro residents were born in Pennsylvania, 17% were born out of state, 0% were born outside of the United States and 8% were foreign born.