Mill Hall, PA has a population of 1,573 and is the 12,417th largest city in the United States. The population density is 1,707 per sq mi which is 516% higher than the Pennsylvania average and 1785% higher than the national average. The median age in Mill Hall is 42 which is approximately 4% higher than the Pennsylvania average of 41. In Mill Hall, 57% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 88% of Mill Hall residents were born in Pennsylvania, 10% were born out of state, 1% were born outside of the United States and 1% were foreign born.