Beaver, PA has a population of 4,441 and is the 6,975th largest city in the United States. The population density is 4,849 per sq mi which is 1650% higher than the Pennsylvania average and 5252% higher than the national average. The median age in Beaver is 47 which is approximately 17% higher than the Pennsylvania average of 41. In Beaver, 64% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 77% of Beaver residents were born in Pennsylvania, 22% were born out of state, 1% were born outside of the United States and 1% were foreign born.