Odenton, MD has a population of 39,759 and is the 1,039th largest city in the United States. The population density is 2,692 per sq mi which is 468% higher than the Maryland average and 2871% higher than the national average. The median age in Odenton is 36 which is approximately 7% lower than the Maryland average of 38. In Odenton, 58% of the population over 15 years of age are married, 87% speak English and 5% speak Spanish. 40% of Odenton residents were born in Maryland, 48% were born out of state, 3% were born outside of the United States and 9% were foreign born.