Kemps Mill, MD has a population of 33 and is the 28,533rd largest city in the United States. The population density is 128 per sq mi which is 73% lower than the Maryland average and 41% higher than the national average. The median age in Kemps Mill is 0 which is approximately 100% lower than the Maryland average of 38. In Kemps Mill, 100% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 100% of Kemps Mill residents were born in Maryland, 0% were born out of state, 0% were born outside of the United States and 0% were foreign born.