Betterton, MD has a population of 374 and is the 21,251st largest city in the United States. The population density is 378 per sq mi which is 20% lower than the Maryland average and 317% higher than the national average. The median age in Betterton is 39 which is approximately 1% higher than the Maryland average of 38. In Betterton, 57% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 61% of Betterton residents were born in Maryland, 39% were born out of state, 1% were born outside of the United States and 0% were foreign born.