In 2018, St. Mary's County, MD had a population of 112k people with a median age of 36.5 and a median household income of $90,438. Between 2017 and 2018 the population of St. Mary's County, MD grew from 110,979 to 111,531, a 0.497% increase and its median household income grew from $86,508 to $90,438, a 4.54% increase.
The 5 largest ethnic groups in St. Mary's County, MD are White (Non-Hispanic) (74.6%), Black or African American (Non-Hispanic) (14.3%), White (Hispanic) (3.98%), Two+ (Non-Hispanic) (3.12%), and Asian (Non-Hispanic) (2.75%). NaNk% of the people in St. Mary's County, MD speak a non-English language, and 97.8% are U.S. citizens.
The median property value in St. Mary's County, MD is $295,000, and the homeownership rate is 70.8%. Most people in St. Mary's County, MD commute by Drove Alone, and the average commute time is 30 minutes. The average car ownership in St. Mary's County, MD is 2 cars per household.