Beaver Falls, PA has a population of 8,735 and is the 4,361st largest city in the United States. The population density is 4,105 per sq mi which is 1381% higher than the Pennsylvania average and 4431% higher than the national average. The median age in Beaver Falls is 33 which is approximately 19% lower than the Pennsylvania average of 41. In Beaver Falls, 41% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 79% of Beaver Falls residents were born in Pennsylvania, 19% were born out of state, 0% were born outside of the United States and 1% were foreign born.