Palmyra, PA has a population of 7,481 and is the 4,944th largest city in the United States. The population density is 3,885 per sq mi which is 1302% higher than the Pennsylvania average and 4188% higher than the national average. The median age in Palmyra is 40 which is approximately 2% lower than the Pennsylvania average of 41. In Palmyra, 55% of the population over 15 years of age are married, 94% speak English and 2% speak Spanish. 80% of Palmyra residents were born in Pennsylvania, 13% were born out of state, 1% were born outside of the United States and 5% were foreign born.