Altoona, PA has a population of 45,209 and is the 908th largest city in the United States. The population density is 4,618 per sq mi which is 1566% higher than the Pennsylvania average and 4997% higher than the national average. The median age in Altoona is 38 which is approximately 6% lower than the Pennsylvania average of 41. In Altoona, 54% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 88% of Altoona residents were born in Pennsylvania, 11% were born out of state, 1% were born outside of the United States and 1% were foreign born.