In 2017, St. Mary's County, MD had a population of 111k people with a median age of 36.5 and a median household income of $86,508. Between 2016 and 2017 the population of St. Mary's County, MD grew from 110,675 to 110,979, a 0.275% increase and its median household income declined from $86,810 to $86,508, a -0.348% decrease.
The 5 largest ethnic groups in St. Mary's County, MD are White (Non-Hispanic) (75.1%), Black or African American (Non-Hispanic) (14.2%), White (Hispanic) (3.73%), Two or More Races (Non-Hispanic) (2.83%), and Asian (Non-Hispanic) (2.77%). N/A% of the people in St. Mary's County, MD speak a non-English language, and 98.2% are U.S. citizens.
The median property value in St. Mary's County, MD is $291,500, and the homeownership rate is 71.9%. Most people in St. Mary's County, MD commute by Drove Alone, and the average commute time is 30.1 minutes. The average car ownership in St. Mary's County, MD is 2 cars per household.