Calvert Beach, MD has a population of 839 and is the 16,275th largest city in the United States. The population density is 1,019 per sq mi which is 115% higher than the Maryland average and 1024% higher than the national average. The median age in Calvert Beach is 43 which is approximately 13% higher than the Maryland average of 38. In Calvert Beach, 57% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 56% of Calvert Beach residents were born in Maryland, 40% were born out of state, 1% were born outside of the United States and 3% were foreign born.