ZIP 20685 (Saint Leonard, MD) truck route planning & crash data
Plan safer truck routes around ZIP 20685: commercial truck and garbage truck crashes here and in Calvert 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
16 of 269 truck crashes since 2015.
Deadliest roads
How Calvert County compares with Maryland
Calvert County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Calvert County stands out
Full comparison
| Measure (2015–2025) | Calvert County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 24.6 | 49.3 | 49.7 | 50% below the state |
| Deaths per 100 crashes | 4.7 | 2.2 | 3.4 | 2.1× the state |
| Injuries per crash | 0.54 | 0.53 | 0.49 | same |
| Garbage-truck share | 5.5% | 3.1% | 2.3% | 1.8× the state |
| On snow, slush or ice | 2.7% | 2.4% | 6.2% | 1.1× the state |
| Morning rush (6–10 am) | 26.9% | 24.7% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 13.6% | 13.8% | 13.8% | same |
| Winter months (Nov–Mar) | 40.1% | 40.4% | 41.9% | same |
| After dark | 15.2% | 25.2% | 24.8% | 40% below the state |
Compared with Maryland, Calvert County is lower on crashes per 100k residents / yr and after dark. Where it is higher: deaths per 100 crashes, garbage-truck share and on snow, slush or ice.
Calvert County at a glance: 4.7 deaths per 100 truck crashes, vs 2.2 in Maryland.
Overview
Calvert County has recorded 269 truck crashes since 2015, with 143 people injured and 12 killed.
Across the years with complete reporting, that is roughly one truck crash every 16 days.
When crashes happen
May has the most truck crashes, 11.5% of the yearly total, while July has the fewest (5.6%).
The five winter months (November to March) hold 40.1% of truck crashes, against 40.4% across Maryland.
More truck crashes happen at 12–1 pm than at any other hour (9.7%).
Road surface: 2.7% of truck crashes were on snow, slush or ice (Maryland: 2.4%).
Where crashes happen
Within this area, SR-4 had the most fatal crashes involving a large truck since 2015 (2). Next come SR-2 (1), SR-235 (1) and SR-247 (1).
Garbage & waste trucks
Garbage trucks account for 16 of the truck crashes here, or 5.9%, compared with 3.1% in Maryland.
Route planning tips for ZIP 20685 fleets
- Plan May schedules with more margin; it is the worst month for truck crashes in Calvert County.
- Check whether your routes use SR-4, the road with the most fatal truck crashes in this area.
- The morning rush (6–10 am) holds 26.9% of truck crashes here, more than Maryland; adjust start times where you can.
- 2.7% of truck crashes were on snow, slush or ice, above Maryland; plan winter equipment checks before the season.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Calvert County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-4 | 2 |
| SR-2 | 1 |
| SR-235 | 1 |
| SR-247 | 1 |
| Sr-Solomons Island Rd | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Calvert County) |
|---|---|
| Solomons Island Rd | 93 |
| Southern Md Blvd | 23 |
| Hallowing Point Rd | 20 |
| Chesapeake Beach Rd | 8 |
| Acrs Marked Off Road | 7 |
| Md 2 - Solomons Island Rd (Sb/L) | 4 |
| Pond Woods Rd | 4 |
| Md231 Hallowing Point Rd | 3 |
ZIP 20685 at a glance
| Population | 6,866 |
| Density | 116 per sq mi |
| Median household income | $119,135 |
| Median home value | $450,526 |
| Home ownership | 95% |
Waste facilities and haulers nearby
Historical data: truck crashes in Calvert 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 | 10 | — | 0.7 |
| 2000s | 18 | +84% | 0.7 |
| 2010s | 21 | +15% | 0.5 |
| 2020s | 23 | +10% | 0.6 |
Reported truck crashes averaged 10 a year in the 1990s and 23 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 0.5 a year in 2016–19 and 0.6 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 20685
How many truck crashes happen in ZIP 20685?
269 truck crashes have been reported in Calvert County since 2015, with 12 deaths and 143 injuries.
Which road has the most fatal truck crashes in ZIP 20685?
Since 2015, SR-4 has had the most fatal large-truck crashes within 10 miles of ZIP 20685: 2.
When do most truck crashes happen in ZIP 20685?
Truck crashes in Calvert County peak in May, with 11.5% of the year's crashes.
How many garbage truck crashes are there in ZIP 20685?
Since 2015, Calvert County has reported 16 garbage-truck crashes, or 5.9% of its truck crashes.
What is the truck crash rate in ZIP 20685 compared with Maryland?
The yearly rate is 24.6 truck crashes per 100,000 residents in Calvert County, vs 49.3 for Maryland.
How do I plan a garbage truck route in ZIP 20685?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.