Marumsco, VA has a population of 38,815 and is the 1,072nd largest city in the United States. The population density is 5,230 per sq mi which is 2633% higher than the Virginia average and 5673% higher than the national average. The median age in Marumsco is 33 which is approximately 12% lower than the Virginia average of 38. In Marumsco, 49% of the population over 15 years of age are married, 50% speak English and 37% speak Spanish. 31% of Marumsco residents were born in Virginia, 28% were born out of state, 2% were born outside of the United States and 38% were foreign born.