Milton, NH has a population of 884 and is the 15,917th largest city in the United States. The population density is 1,094 per sq mi which is 675% higher than the New Hampshire average and 1108% higher than the national average. The median age in Milton is 34 which is approximately 20% lower than the New Hampshire average of 42. In Milton, 56% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 59% of Milton residents were born in New Hampshire, 41% were born out of state, 0% were born outside of the United States and 0% were foreign born.