Chevy Chase Section Three, MD has a population of 733 and is the 17,172nd largest city in the United States. The population density is 6,280 per sq mi which is 1224% higher than the Maryland average and 6831% higher than the national average. The median age in Chevy Chase Section Three is 45 which is approximately 17% higher than the Maryland average of 38. In Chevy Chase Section Three, 74% of the population over 15 years of age are married, 92% speak English and 1% speak Spanish. 8% of Chevy Chase Section Three residents were born in Maryland, 79% were born out of state, 4% were born outside of the United States and 9% were foreign born.