Silver Spring, MD has a population of 78,038 and is the 448th largest city in the United States. The population density is 9,896 per sq mi which is 1986% higher than the Maryland average and 10823% higher than the national average. The median age in Silver Spring is 35 which is approximately 9% lower than the Maryland average of 38. In Silver Spring, 47% of the population over 15 years of age are married, 54% speak English and 25% speak Spanish. 19% of Silver Spring residents were born in Maryland, 41% were born out of state, 2% were born outside of the United States and 37% were foreign born.