County Dossier
St. Mary's County
Maryland | County
Population
115,126
Land Area
358.6 sq mi
Context
Metro
Geography
County silhouette
- Land Area
- 358.6 sq mi
- Water Area
- 405.7 sq mi
- Water Share
- 53.1%
Terrain Layer
Open the county terrain view inside the atlas flow.
Population & Housing
Population
115,126
- Density
- 321.1 / sq mi
- Households
- 42,436
- Housing Units
- 46,385
- Median Age
- 37.2 years
Income & Economy
Median Household Income
$119,446
GDP
$10.45B
Real GDP Change+2.8%
- Per Capita Income
- $53,417
- Personal Income
- $8.54B
- Personal Income Per Capita
- $73,314
Classification
RUCC 3
Metro
Counties in metro areas of fewer than 250,000 population
Relief
Min
-2 ft
Mean
35 ft
Max
191 ft