Ellwood City, PA has a population of 7,915 and is the 4,732nd largest city in the United States. The population density is 3,406 per sq mi which is 1129% higher than the Pennsylvania average and 3659% higher than the national average. The median age in Ellwood City is 41 which is approximately 2% higher than the Pennsylvania average of 41. In Ellwood City, 55% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 88% of Ellwood City residents were born in Pennsylvania, 10% were born out of state, 0% were born outside of the United States and 2% were foreign born.