ZIP 20624 (Clements, MD) truck route planning & crash data
Plan safer truck routes around ZIP 20624: 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).
The headline for ZIP 20624: SR-234 3 fatal truck crashes since 2015, more than any other road within 10 miles of ZIP 20624.
Overview
Since 2015, 367 crashes involving commercial trucks have been reported in St. Mary's County. They injured 243 people and killed 8.
That averages about one truck crash every 12 days in fully reported years.
When crashes happen
March has the most truck crashes, 12.0% of the yearly total, while February has the fewest (6.3%).
November through March accounts for 41.8% of truck crashes here, compared with 40.4% in Maryland.
The busiest hour is 12–1 pm, with 11.4% of truck crashes.
0.6% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 20624 is SR-234, with 3 fatal large-truck crashes since 2015. Next come SR-235 (1), SR-247 (1) and SR-6 (1).
Garbage & waste trucks
14 crashes involved a garbage or refuse truck, a 3.8% share (Maryland: 3.1%).
Route planning tips for ZIP 20624 fleets
- Plan March schedules with more margin; it is the worst month for truck crashes in St. Mary's County.
- Check whether your routes use SR-234, the road with the most fatal truck crashes in this area.
- 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-234 | 3 |
| SR-235 | 1 |
| SR-247 | 1 |
| SR-6 | 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 20624 at a glance
| Population | 796 |
| Density | 30 per sq mi |
| Median household income | $104,545 |
| Home ownership | 88% |
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 |
From the 1990s to the 2020s, yearly reported truck crashes went from 14 to 34. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 1.5 a year in 2016–19, 0.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 20624
How many truck accidents are there in ZIP 20624?
Since 2015, 367 crashes involving commercial trucks were reported in St. Mary's County (243 injured, 8 killed).
What is the most dangerous road for trucks in ZIP 20624?
Since 2015, SR-234 has had the most fatal large-truck crashes within 10 miles of ZIP 20624: 3.
Which month has the most truck crashes in ZIP 20624?
The worst month is March: 12.0% of truck crashes in St. Mary's County happen then.
Are garbage truck crashes common in ZIP 20624?
14 crashes involving garbage or refuse trucks have been reported in St. Mary's County since 2015, 3.8% of all truck crashes.
How does ZIP 20624 compare with Maryland for truck crashes?
St. Mary's County records 27.1 truck crashes per 100,000 residents a year, against 49.3 across Maryland.
How can I plan a safer truck route in ZIP 20624?
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.