New Market, MD has a population of 1,133 and is the 14,388th largest city in the United States. The population density is 814 per sq mi which is 30% higher than the Maryland average and 798% higher than the national average. The median age in New Market is 35 which is approximately 9% lower than the Maryland average of 38. In New Market, 73% of the population over 15 years of age are married, 88% speak English and 7% speak Spanish. 58% of New Market residents were born in Maryland, 34% were born out of state, 1% were born outside of the United States and 8% were foreign born.