Milton, MA has a population of 27,351 and is the 1,578th largest city in the United States. The population density is 2,102 per sq mi which is 234% higher than the Massachusetts average and 2220% higher than the national average. The median age in Milton is 39 which is approximately 2% lower than the Massachusetts average of 39. In Milton, 58% of the population over 15 years of age are married, 82% speak English and 3% speak Spanish. 68% of Milton residents were born in Massachusetts, 17% were born out of state, 1% were born outside of the United States and 13% were foreign born.