Latrobe, PA has a population of 8,135 and is the 4,631st largest city in the United States. The population density is 3,513 per sq mi which is 1168% higher than the Pennsylvania average and 3778% higher than the national average. The median age in Latrobe is 42 which is approximately 4% higher than the Pennsylvania average of 41. In Latrobe, 58% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 84% of Latrobe residents were born in Pennsylvania, 15% were born out of state, 0% were born outside of the United States and 1% were foreign born.