Wilkes-Barre, PA has a population of 40,964 and is the 1,005th largest city in the United States. The population density is 5,869 per sq mi which is 1945% higher than the Pennsylvania average and 6377% higher than the national average. The median age in Wilkes-Barre is 34 which is approximately 17% lower than the Pennsylvania average of 41. In Wilkes-Barre, 40% of the population over 15 years of age are married, 85% speak English and 11% speak Spanish. 67% of Wilkes-Barre residents were born in Pennsylvania, 23% were born out of state, 2% were born outside of the United States and 7% were foreign born.