Potomac Park, MD has a population of 888 and is the 15,890th largest city in the United States. The population density is 2,302 per sq mi which is 385% higher than the Maryland average and 2441% higher than the national average. The median age in Potomac Park is 38 which is approximately 1% lower than the Maryland average of 38. In Potomac Park, 64% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 78% of Potomac Park residents were born in Maryland, 22% were born out of state, 0% were born outside of the United States and 0% were foreign born.