Peabody, MA has a population of 52,235 and is the 772nd largest city in the United States. The population density is 3,219 per sq mi which is 411% higher than the Massachusetts average and 3453% higher than the national average. The median age in Peabody is 45 which is approximately 13% higher than the Massachusetts average of 39. In Peabody, 59% of the population over 15 years of age are married, 79% speak English and 7% speak Spanish. 74% of Peabody residents were born in Massachusetts, 10% were born out of state, 1% were born outside of the United States and 15% were foreign born.