Parkville, MD has a population of 31,562 and is the 1,352nd largest city in the United States. The population density is 7,366 per sq mi which is 1453% higher than the Maryland average and 8030% higher than the national average. The median age in Parkville is 38 which is approximately 2% lower than the Maryland average of 38. In Parkville, 50% of the population over 15 years of age are married, 88% speak English and 3% speak Spanish. 70% of Parkville residents were born in Maryland, 19% were born out of state, 1% were born outside of the United States and 10% were foreign born.