Carrolltown, PA has a population of 873 and is the 16,002nd largest city in the United States. The population density is 1,262 per sq mi which is 355% higher than the Pennsylvania average and 1293% higher than the national average. The median age in Carrolltown is 46 which is approximately 14% higher than the Pennsylvania average of 41. In Carrolltown, 63% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 89% of Carrolltown residents were born in Pennsylvania, 10% were born out of state, 0% were born outside of the United States and 0% were foreign born.