North Brentwood, MD has a population of 524 and is the 19,253rd largest city in the United States. The population density is 4,642 per sq mi which is 879% higher than the Maryland average and 5024% higher than the national average. The median age in North Brentwood is 42 which is approximately 9% higher than the Maryland average of 38. In North Brentwood, 37% of the population over 15 years of age are married, 70% speak English and 25% speak Spanish. 25% of North Brentwood residents were born in Maryland, 48% were born out of state, 1% were born outside of the United States and 27% were foreign born.