St. Mary's County, Maryland
Among the top 12% of US counties for lifestyle & connectivity.
AffordabilityAffordability: grade F, better than 10% of US counties
WeatherWeather: grade D, better than 16% of US counties
Safety & WellbeingSafety & Wellbeing: grade B, better than 62% of US counties
Getting AroundGetting Around: grade B, better than 51% of US counties
Lifestyle & ConnectivityLifestyle & Connectivity: grade A, better than 88% of US counties
- top 11% for broadband access
- top 16% for sales tax
- bottom 3% for monthly rent
St. Mary's County is a county in Maryland with about 114,000 residents. It grades A for lifestyle & connectivity and F for affordability. Standout strengths include broadband access, sales tax, and airport distance. It rates lower on cost of living and monthly rent.
Official websitestmaryscountymd.gov (opens in new tab)
Climate
Hot, humid summers · Cool winters · Moderate rain · Light snow
cold
cool
comfortable
warm
hot
warm
comf.
cool
cold
62%52%clearovercast
Precipitation 4.5 in3.2 in
muggy 98%dry
Livability factors
Affordability
Median Household Income$114k98th percentile — neutral, not ranked
Cost of Living$62kbetter than 5% of US counties
Home Value$377k94th percentile — neutral, not ranked
Monthly Rent$2kbetter than 3% of US counties
Monthly Owner Costs$2kbetter than 5% of US counties
Property Tax Rate0.89%better than 47% of US counties
Income Tax9.00%better than 9% of US counties
State 5.80% + Local 3.20%
Sales Tax6.00%better than 84% of US counties
Estimated total tax burden13.93%better than 11% of US counties
Unemployment3.7%better than 71% of US counties
Weather
Winter Temp (Jan)37°F60th percentile — neutral, not ranked
Summer Temp (Jul)79°F62nd percentile — neutral, not ranked
Annual Precipitation46.8 in61st percentile — neutral, not ranked
Annual Snowfall13.1 inbetter than 49% of US counties
Sunny Days206 daysbetter than 20% of US counties
Summer Humidity68°Fbetter than 30% of US counties
Comfortable Days83 daysbetter than 60% of US counties
Safety & Wellbeing
Natural Disaster Risk42.6better than 56% of US counties
School Quality63.1better than 65% of US counties
Violent Crime868/100kbetter than 44% of US counties
Property Crime638/100kbetter than 64% of US counties
Community
Population113,81483rd percentile — neutral, not ranked
Median Age37.017th percentile — neutral, not ranked
Racial Diversity0.4370th percentile — neutral, not ranked
Male/Female Ratio1.0263rd percentile — neutral, not ranked
Political LeaningR+1425th percentile — neutral, not ranked
White (%)71.8%37th percentile — neutral, not ranked
Black (%)14.3%81st percentile — neutral, not ranked
Hispanic (%)5.7%55th percentile — neutral, not ranked
Asian (%)2.5%87th percentile — neutral, not ranked
Other / Multiracial (%)5.8%84th percentile — neutral, not ranked
Getting Around
Commute Time30 minbetter than 16% of US counties
Walkability6.2/20better than 54% of US counties
Airport Distance47 mibetter than 82% of US counties
Lifestyle & Connectivity
Broadband Access90.1%better than 89% of US counties
Amenities Nearby7.82better than 79% of US counties
Park & Nature AccessModeratebetter than 49% of US counties
Frequently asked questions
- Is St. Mary's County an affordable place to live?
- St. Mary's County is relatively expensive. Its cost-of-living index is $62k, better than 5% of comparable areas.
- What is the median home value in St. Mary's County?
- The median home value in St. Mary's County is $377k, per the U.S. Census ACS (5-Year).
- What is the median household income in St. Mary's County?
- Median household income in St. Mary's County is $114k, per the U.S. Census ACS (5-Year).
- How much is rent in St. Mary's County?
- Median gross rent in St. Mary's County is $2k a month, per the U.S. Census ACS (5-Year).
- Is St. Mary's County safe?
- St. Mary's County is about average for safety comparable areas, with a violent crime rate of 868/100k (better than 44%). Property crime is 638/100k.
- What is the weather like in St. Mary's County?
- St. Mary's County averages 79°F in July and 37°F in January, with 46.8 in of annual precipitation and about 206 sunny days a year.
- How are the schools in St. Mary's County?
- Public-school quality in St. Mary's County is above average, scoring better than 65% of comparable areas on a composite of graduation rates, spending, and student-teacher ratio.
- How long is the commute in St. Mary's County?
- The average one-way commute in St. Mary's County is 30 min.
Other counties in Maryland
Explore Maryland
Data sources
- EPA Smart Location Database
- EPI Family Budget Calculator
- FAA airport enplanements
- FBI Uniform Crime Reports
- FEMA National Risk Index
- MIT Election Data Lab (2020)
- NCES School Finance Survey
- NOAA Climate Normals (1991–2020)
- NOAA nClimGrid
- OpenStreetMap
- Tax Foundation + state revenue depts
- U.S. Census ACS (5-Year)
- USGS Protected Areas (PAD-US)