Martin's Additions, MD has a population of 912 and is the 15,717th largest city in the United States. The population density is 6,598 per sq mi which is 1291% higher than the Maryland average and 7182% higher than the national average. The median age in Martin's Additions is 45 which is approximately 18% higher than the Maryland average of 38. In Martin's Additions, 73% of the population over 15 years of age are married, 83% speak English and 6% speak Spanish. 9% of Martin's Additions residents were born in Maryland, 76% were born out of state, 4% were born outside of the United States and 11% were foreign born.