Clear Spring, MD has a population of 448 and is the 20,237th largest city in the United States. The population density is 3,903 per sq mi which is 723% higher than the Maryland average and 4208% higher than the national average. The median age in Clear Spring is 39 which is approximately 2% higher than the Maryland average of 38. In Clear Spring, 38% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 79% of Clear Spring residents were born in Maryland, 20% were born out of state, 1% were born outside of the United States and 1% were foreign born.