Map the Block › Places › Maryland › St. Mary's County
What are the crime rate and median income in St. Mary's County, Maryland?
St. Mary's County averaged 2.1 reported violent crimes per 1,000 residents a year in 2021-2025, 51% lower than the Maryland rate (4.2). Median household income is $119,446 and the unemployment rate was 3.7% in August 2026. It is home to roughly 115,126 residents.
Last updated . Crime: FBI 2021-2025. Income and housing: Census ACS 2020-2024. Unemployment: BLS August 2026. Road work: October 11, 2026.
Also on the map: income · hazard risk · Superfund · dams
What is the crime rate in St. Mary's County?
Over 2021-2025, the county's police agencies sent the FBI reports of about 240 violent and 1,081 property crimes per year. The violent rate, 2.1 per 1,000 people, is 51% lower than the Maryland rate (4.2); nationally it is 3.7. Burglary, theft and car theft together come to 9.3 per 1,000 residents, compared with 18.5 across Maryland. Most violent crimes here are aggravated assaults (73%). CDC death records show about 4 homicide deaths a year in the county (3.4 per 100,000), a count that includes cases police may classify differently.
| Offense (yearly average, 2021-2025) | St. Mary's County | Per 1,000 | Maryland per 1,000 | U.S. per 1,000 |
|---|---|---|---|---|
| Violent crime | 240 | 2.1 | 4.2 | 3.7 |
| Murder | 3 | 0.03 | 0.08 | 0.06 |
| Rape | 42 | 0.36 | 0.34 | 0.40 |
| Robbery | 19 | 0.16 | 1.2 | 0.62 |
| Aggravated assault | 175 | 1.5 | 2.6 | 2.6 |
| Property crime | 1,081 | 9.3 | 18.5 | 18.1 |
| Burglary | 182 | 1.6 | 1.9 | 2.4 |
| Larceny-theft | 814 | 7.0 | 13.2 | 13.0 |
| Motor vehicle theft | 84 | 0.72 | 3.4 | 2.6 |
Most crime never reaches the police, so these are reported crimes, a floor rather than the full count. In 2024 about half of violent crimes (48%) and about 3 in 10 property crimes (31%) were reported to police (U.S. Justice Department, National Crime Victimization Survey). Rates also depend on how completely each agency reports to the FBI. County figures add up the city police and sheriff reports in the county (1 agencies; 100% of residents covered).
What is the median household income in St. Mary's County?
The median household in St. Mary's County earns $119,446 a year, 15% higher than the Maryland median ($103,678). Owner-occupied homes have a median value of $407,600, and the median rent is $1,747 a month. 11.2% of households received SNAP benefits in the past year (state: 11.2%). The newest monthly figure from the Bureau of Labor Statistics is 3.7% for August 2026 (preliminary), with 2,130 people out of work and looking.
| Census ACS 2020-2024 | St. Mary's County | Maryland | United States |
|---|---|---|---|
| Population | 115,126 | 6,206,011 | 334,922,499 |
| Median household income | $119,446 | $103,678 | $80,734 |
| Median home value (owner-occupied) | $407,600 | $419,900 | $332,700 |
| Median gross rent | $1,747 | $1,705 | $1,413 |
| Unemployment rate (2020-2024 average) | 3.6% | 4.9% | 5.2% |
| People below the poverty line | 8.0% | 9.4% | 12.5% |
| Households receiving SNAP (food stamps) | 11.2% | 11.2% | 12.1% |
| Adults 25+ with a bachelor's degree or higher | 36.5% | 43.4% | 35.7% |
| Homeowner households | 73.2% | 67.6% | 65.2% |
| Median age | 37.2 | 39.4 | 38.9 |
| Households with broadband internet | 93.1% | 92.4% | 91.0% |
| People without health insurance | 3.9% | 6.3% | 8.4% |
What natural hazards and environmental sites are in St. Mary's County?
FEMA's National Risk Index rates the overall natural-hazard risk for St. Mary's County as “Very Low”. No single hazard among floods, wildfire, tornadoes, heat waves, earthquakes and hurricanes is rated higher than “Relatively Moderate”. The index compares counties with each other and also weighs how vulnerable and resilient a community is, so it is a long-run estimate, not a forecast.
Superfund sites
1 Superfund site is on or proposed for EPA's National Priorities List in St. Mary's County: Patuxent River Naval Air Station. 1 other site has finished cleanup and been taken off the list. A listing means EPA is managing a long-term cleanup; it does not by itself mean anyone is exposed today.
High-hazard dams
The National Inventory of Dams lists 1 high-hazard dam in St. Mary's County. None is rated Poor or Unsatisfactory; 1 is rated Satisfactory or Fair. The tallest is St Marys River Watershed Site 1 (38 ft). “High hazard” describes what lies downstream (people would probably die if the dam failed), not how likely the dam is to fail.
Industrial chemical releases
2 facilities in the county filed Toxics Release Inventory reports for 2024, together reporting 1 pounds of listed chemicals released on site. Reported releases are legal permitted amounts in most cases.
Disasters, air and water
St. Mary's County was covered by 1 federal major disaster declaration from 2016 through 2025 (Hurricane 1), not counting COVID-19. Of 38 community water systems, none had an open health-based drinking-water violation in EPA's records (September 2026). EPA puts the county in radon zone 2 (moderate). NHTSA counted 13 traffic deaths in the county in 2024, including 1 pedestrian.
Is there road construction in St. Mary's County?
No highway work zones were listed in St. Mary's County in the October 11, 2026 state feed. Some states publish only part of their road work in open feeds, so check the state's 511 site before you travel. The map's layer refreshes every morning.
See today's work zones on the map →
How many schools, nursing homes and parks are in St. Mary's County?
Federal school lists show 27 public and 17 private schools in the county. 3 nursing homes are certified by Medicare or Medicaid here; star ratings for each are on the map and on Medicare's Care Compare. USGS mapping shows 10 fire or EMS stations and 5 police or sheriff stations. 4 state parks or recreation areas: Greenwell State Park, Newtowne Neck State Park, Point Lookout State Park and St Marys River State Park.
Gun shops, liquor stores and Planned Parenthood in St. Mary's County
Gun shops
5 gun shops with a public storefront are on the map in St. Mary's County, plus 26 more licensed dealers without a public storefront (not shown). On the ATF list: Accurate Guns And Ammo LLC (Leonardtown), Bob's Sunoco LLC (Callaway), D & L Locksmithing (St Inigoes), The Tackle Box INC (Lexington Park) and Walmart #1981 (California).
Liquor stores
23 liquor stores are on the map in St. Mary's County: 2000 Liquors (Lexington Park), A & B Liquors (Mechanicsville), Beacon Liquors (Callaway), California Wine And Spirits, Centre Liquors (Leonardtown), Cook's Liquors (Hollywood), County Liquors (Lexington Park), Early Bird Liquor Store (Hollywood) and 15 more. Maryland has no complete public liquor licence list we can use, so this count also draws on OpenStreetMap and Overture Maps and may miss some stores or include closed ones.
Planned Parenthood
There is no Planned Parenthood health center in St. Mary's County on the map.
See them on the map: gun shops · liquor stores →
Sources: ATF licensee list (Sept 2026); state liquor licence lists, OpenStreetMap and Overture Maps (non-official; partial in some states); HHS Title X directory and CMS NPPES.
Common questions
What is the crime rate in St. Mary's County?
St. Mary's County averaged 240 reported violent crimes a year in 2021-2025, or 2.1 per 1,000 residents, 51% lower than the Maryland rate (4.2). The property-crime rate was 9.3 per 1,000 (FBI Uniform Crime Reporting).
What is the median household income in St. Mary's County?
$119,446 (Census American Community Survey, 2020-2024 average), compared with $103,678 for Maryland and $80,734 nationally.
What is the unemployment rate in St. Mary's County?
The newest monthly figure from the Bureau of Labor Statistics is 3.7% for August 2026 (preliminary), with 2,130 people out of work and looking.
What natural hazards affect St. Mary's County?
FEMA's National Risk Index rates the overall natural-hazard risk for St. Mary's County as “Very Low”. No single hazard among floods, wildfire, tornadoes, heat waves, earthquakes and hurricanes is rated higher than “Relatively Moderate”.
Are there Superfund sites in St. Mary's County?
1 Superfund site is on or proposed for EPA's National Priorities List in St. Mary's County: Patuxent River Naval Air Station. 1 other site has finished cleanup and been taken off the list.
Is there road construction in St. Mary's County right now?
No highway work zones were listed in St. Mary's County in the October 11, 2026 state feed. Some states publish only part of their road work in open feeds, so check the state's 511 site before you travel.
How many nursing homes are in St. Mary's County?
3 Medicare- or Medicaid-certified nursing homes (CMS provider data, September 2026).
How does St. Mary's County compare with neighboring counties?
| County | Population | Violent crimes per 1,000 (2021-25) | Median household income |
|---|---|---|---|
| Calvert County | 94,313 | 1.2 | $133,922 |
| Charles County | 170,527 | 3.0 | $122,816 |
More: Maryland statewide numbers · Sex-offender registry search (U.S. Justice Department, NSOPW)
Where do these numbers come from?
- Crime: FBI Uniform Crime Reporting 2021-2025 (agency level, Return A), averaged and summed by county by Map the Block; Census population; state and national rates: FBI estimated crimes 2021-2025.
- Income, housing, education: U.S. Census Bureau, American Community Survey 2020-2024 5-year, table B19013 (median household income) and related tables.
- Monthly unemployment: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (LAUS), county data, not seasonally adjusted. Public domain.
- Hazards: FEMA National Risk Index v1.20 (December 2025), county scores; disasters: FEMA OpenFEMA Disaster Declarations Summaries.
- Superfund: U.S. EPA, Superfund site boundaries and NPL status (October 2026). Dams: U.S. Army Corps of Engineers, National Inventory of Dams (public map service, October 2026). Chemical releases: U.S. EPA Toxics Release Inventory, reporting year 2024 (basic data file).
- Air and water: U.S. EPA AirData, annual AQI by county 2024; EPA Air Quality Design Values 2023-2025 (June 2026); U.S. EPA SDWIS via ECHO drinking-water download (September 30, 2026). Traffic deaths: NHTSA Fatality Analysis Reporting System (FARS) 2024; Census population.
- Work zones: State departments of transportation, via the U.S. DOT Work Zone Data Exchange (WZDx) and state 511 feeds; refreshed every morning (snapshot October 11, 2026).
- Schools: National Center for Education Statistics, EDGE public school locations 2024-25; budgets: U.S. Census Bureau, Annual Survey of School System Finances, fiscal year 2024; National Center for Education Statistics, EDGE Private School geocodes (Private School Survey 2023-24). Nursing homes: U.S. Centers for Medicare & Medicaid Services, Nursing Home Provider Information and Penalties (September 2026). Stations: U.S. Geological Survey, National Structures Dataset (Fire Stations/EMS Stations), October 2026 pull.
- Parks: USGS Protected Areas Database of the U.S. (PAD-US 4.1); state park agencies' open data (CA, NY, PA, TN, TX, FL, NJ, KY, HI, UT, MT and others); OpenStreetMap contributors for some hours, phones, fees and camping; U.S. National Park Service: unit boundaries (Land Resources Division), Acreage Report (Sept 30, 2026), park pages on nps.gov (hours, fees), Visitor Use Statistics (2025).
Map the Block shows public statistics about places, not people, and does not rate or rank neighborhoods as places to live. Figures are as published by each source; check the source before relying on a number.
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