Glassmanor, MD has a population of 17,608 and is the 2,459th largest city in the United States. The population density is 7,476 per sq mi which is 1476% higher than the Maryland average and 8152% higher than the national average. The median age in Glassmanor is 33 which is approximately 14% lower than the Maryland average of 38. In Glassmanor, 29% of the population over 15 years of age are married, 88% speak English and 10% speak Spanish. 16% of Glassmanor residents were born in Maryland, 70% were born out of state, 1% were born outside of the United States and 13% were foreign born.