St. Mary's County
- Population
- 115,126
- Area
- 0.36 sq mi (0.93 km²), 0.41 sq mi water
- Median age
- 37.2
- Households
- 42,436
- Persons per household
- 2.7
- Median household income
- $119,446
- Median house value
- $407,600
Demographics: 2020–2024 ACS
Overnight
66°F
Showers And Thunderstorms93% precip
Saturday
78°F
Showers And Thunderstorms98% precip
Saturday Night
67°F
Chance Showers And Thunderstorms40% precip
Sunday
84°F
Mostly Sunny10% precip