Magnolia, DE has a population of 203 and is the 24,382nd largest city in the United States. The population density is 1,038 per sq mi which is 182% higher than the Delaware average and 1045% higher than the national average. The median age in Magnolia is 35 which is approximately 11% lower than the Delaware average of 40. In Magnolia, 54% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 58% of Magnolia residents were born in Delaware, 42% were born out of state, 0% were born outside of the United States and 0% were foreign born.