South Uniontown, PA has a population of 1,296 and is the 13,570th largest city in the United States. The population density is 2,850 per sq mi which is 928% higher than the Pennsylvania average and 3046% higher than the national average. The median age in South Uniontown is 42 which is approximately 4% higher than the Pennsylvania average of 41. In South Uniontown, 65% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 91% of South Uniontown residents were born in Pennsylvania, 8% were born out of state, 0% were born outside of the United States and 2% were foreign born.