South Waverly, PA has a population of 1,239 and is the 13,847th largest city in the United States. The population density is 1,404 per sq mi which is 407% higher than the Pennsylvania average and 1450% higher than the national average. The median age in South Waverly is 50 which is approximately 22% higher than the Pennsylvania average of 41. In South Waverly, 71% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 69% of South Waverly residents were born in Pennsylvania, 31% were born out of state, 0% were born outside of the United States and 0% were foreign born.