Lake City, PA has a population of 2,984 and is the 8,846th largest city in the United States. The population density is 1,659 per sq mi which is 499% higher than the Pennsylvania average and 1732% higher than the national average. The median age in Lake City is 35 which is approximately 13% lower than the Pennsylvania average of 41. In Lake City, 56% of the population over 15 years of age are married, 94% speak English and 2% speak Spanish. 83% of Lake City residents were born in Pennsylvania, 14% were born out of state, 0% were born outside of the United States and 2% were foreign born.