White Marsh, MD has a population of 9,722 and is the 4,020th largest city in the United States. The population density is 1,834 per sq mi which is 287% higher than the Maryland average and 1924% higher than the national average. The median age in White Marsh is 39 which is approximately 2% higher than the Maryland average of 38. In White Marsh, 57% of the population over 15 years of age are married, 81% speak English and 3% speak Spanish. 68% of White Marsh residents were born in Maryland, 18% were born out of state, 1% were born outside of the United States and 14% were foreign born.