Leetsdale, PA has a population of 1,287 and is the 13,614th largest city in the United States. The population density is 1,287 per sq mi which is 364% higher than the Pennsylvania average and 1320% higher than the national average. The median age in Leetsdale is 42 which is approximately 4% higher than the Pennsylvania average of 41. In Leetsdale, 62% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 78% of Leetsdale residents were born in Pennsylvania, 19% were born out of state, 1% were born outside of the United States and 2% were foreign born.