Milford, DE has a population of 10,532 and is the 3,792nd largest city in the United States. The population density is 1,081 per sq mi which is 193% higher than the Delaware average and 1093% higher than the national average. The median age in Milford is 37 which is approximately 7% lower than the Delaware average of 40. In Milford, 58% of the population over 15 years of age are married, 83% speak English and 11% speak Spanish. 50% of Milford residents were born in Delaware, 37% were born out of state, 2% were born outside of the United States and 11% were foreign born.