Langhorne, PA has a population of 1,606 and is the 12,311th largest city in the United States. The population density is 3,264 per sq mi which is 1078% higher than the Pennsylvania average and 3503% higher than the national average. The median age in Langhorne is 51 which is approximately 25% higher than the Pennsylvania average of 41. In Langhorne, 61% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 72% of Langhorne residents were born in Pennsylvania, 22% were born out of state, 1% were born outside of the United States and 5% were foreign born.