ZIP 20670 (Patuxent River, MD) truck route planning & crash data
Plan safer truck routes around ZIP 20670: commercial truck and garbage truck crashes here and in St. Mary's County, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
14 of 367 truck crashes since 2015.
Deadliest roads
How St. Mary's County compares with Maryland
St. Mary's County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where St. Mary's County stands out
Full comparison
| Measure (2015–2025) | St. Mary's County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 27.1 | 49.3 | 49.7 | 45% below the state |
| Deaths per 100 crashes | 2.0 | 2.2 | 3.4 | 9% below the state |
| Injuries per crash | 0.67 | 0.53 | 0.49 | 1.3× the state |
| Garbage-truck share | 4.0% | 3.1% | 2.3% | 1.3× the state |
| On snow, slush or ice | 0.6% | 2.4% | 6.2% | 76% below the state |
| Morning rush (6–10 am) | 31.7% | 24.7% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 9.5% | 13.8% | 13.8% | 31% below the state |
| Winter months (Nov–Mar) | 41.8% | 40.4% | 41.9% | same |
| After dark | 13.3% | 25.2% | 24.8% | 47% below the state |
Compared with Maryland, St. Mary's County is lower on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher injuries per crash, garbage-truck share and morning rush (6–10 am).
St. Mary's County at a glance: 0.6% of truck crashes happened on snow, slush or ice, vs 2.4% in Maryland.
Overview
St. Mary's County has recorded 367 truck crashes since 2015, with 243 people injured and 8 killed.
In complete reporting years that works out to about one truck crash every 12 days.
When crashes happen
March has the most truck crashes, 12.0% of the yearly total, while February has the fewest (6.3%).
Winter months (Nov–Mar) carry 41.8% of truck crashes, vs 40.4% for Maryland.
More truck crashes happen at 12–1 pm than at any other hour (11.4%).
Snow, slush or ice was on the road in 0.6% of truck crashes, compared with 2.4% in Maryland.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 20670 happened on SR-235 (1) and SR-4 (1); no road leads clearly.
Garbage & waste trucks
Garbage trucks account for 14 of the truck crashes here, or 3.8%, compared with 3.1% in Maryland.
Route planning tips for ZIP 20670 fleets
- Plan March schedules with more margin; it is the worst month for truck crashes in St. Mary's County.
- The morning rush (6–10 am) holds 31.7% of truck crashes here, more than Maryland; adjust start times where you can.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in St. Mary's County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-235 | 1 |
| SR-4 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (St. Mary's County) |
|---|---|
| Three Notch Rd | 101 |
| Point Lookout Rd | 52 |
| Budds Creek Rd | 13 |
| St Andrews Church Rd | 12 |
| Acrs Marked Off Road | 8 |
| Great Mills Rd | 7 |
| Hollywood Rd | 6 |
| Patuxent Beach Rd | 5 |
ZIP 20670 at a glance
| Population | 2,046 |
| Density | 84 per sq mi |
| Median household income | $70,371 |
| Home ownership | 0% |
Historical data: truck crashes in St. Mary's County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 14 | — | 1.1 |
| 2000s | 10 | -30% | 0.6 |
| 2010s | 24 | +158% | 0.8 |
| 2020s | 34 | +37% | 0.4 |
Reported truck crashes averaged 14 a year in the 1990s and 34 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 1.5 a year in 2016–19 and 0.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 20670
How many truck accidents are there in ZIP 20670?
St. Mary's County has had 367 reported truck crashes since 2015, injuring 243 people and killing 8.
What is the worst month for truck crashes in ZIP 20670?
The worst month is March: 12.0% of truck crashes in St. Mary's County happen then.
How many garbage truck crashes are there in ZIP 20670?
14 crashes involving garbage or refuse trucks have been reported in St. Mary's County since 2015, 3.8% of all truck crashes.
What is the truck crash rate in ZIP 20670 compared with Maryland?
Per 100,000 residents, St. Mary's County has 27.1 truck crashes a year; Maryland has 49.3.
What is the best way to plan truck routes in ZIP 20670?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.