ZIP 21770 (Monrovia, MD) truck route planning & crash data
Plan safer truck routes around ZIP 21770: commercial truck and garbage truck crashes here and in Frederick 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
10.2 deaths per 100 garbage-truck crashes vs 2.8 for all trucks.
Deadliest roads
How Frederick County compares with Maryland
Frederick County against Maryland and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Frederick County stands out
Full comparison
| Measure (2015–2025) | Frederick County | Maryland | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 61.2 | 49.3 | 49.7 | 1.2× the state |
| Deaths per 100 crashes | 2.8 | 2.2 | 3.4 | 1.3× the state |
| Injuries per crash | 0.46 | 0.53 | 0.49 | 13% below the state |
| Garbage-truck share | 2.4% | 3.1% | 2.3% | 21% below the state |
| On snow, slush or ice | 2.7% | 2.4% | 6.2% | 1.1× the state |
| Morning rush (6–10 am) | 26.6% | 24.7% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 14.6% | 13.8% | 13.8% | same |
| Winter months (Nov–Mar) | 39.5% | 40.4% | 41.9% | same |
| After dark | 24.8% | 25.2% | 24.8% | same |
Compared with Maryland, Frederick County is lower on injuries per crash and garbage-truck share. Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for ZIP 21770: I-70 8 fatal truck crashes since 2015, more than any other road within 10 miles of ZIP 21770.
Overview
Police reported 2,133 crashes involving commercial trucks in Frederick County since 2015: 974 people were injured and 60 were killed.
In complete reporting years that works out to about one truck crash every 2 days.
When crashes happen
Truck crashes peak in October (9.6% of the year) and are lowest in February (7.2%).
Winter months (Nov–Mar) carry 39.5% of truck crashes, vs 40.4% for Maryland.
More truck crashes happen at 8–9 am than at any other hour (7.7%).
2.7% of truck crashes here happened on snow, slush or ice, against 2.4% across Maryland.
Where crashes happen
I-70 leads within 10 miles of ZIP 21770 with 8 fatal crashes involving a large truck since 2015. Next come SR-26 (3), I-270 (2) and SR-27 (2).
Garbage & waste trucks
Garbage trucks account for 50 of the truck crashes here, or 2.3%, compared with 3.1% in Maryland.
Garbage-truck crashes peak in January (14% of them).
Deaths per 100 garbage-truck crashes: 10.2, vs 2.8 for all truck crashes.
Route planning tips for ZIP 21770 fleets
- Plan October schedules with more margin; it is the worst month for truck crashes in Frederick County.
- Look at alternatives to I-70 at busy times: it leads this area in fatal truck crashes.
- Waste haulers: January is the peak month for garbage-truck crashes in Frederick County.
- 26.6% of truck crashes happen between 6 and 10 am, above Maryland; consider earlier or later starts where possible.
- With 2.7% of truck crashes on snow, slush or ice (above Maryland), plan winter equipment checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Frederick County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-70 | 8 |
| SR-26 | 3 |
| I-270 | 2 |
| SR-27 | 2 |
| SR-85 | 2 |
| CR-407 | 1 |
| Mu293 Pullman Ct | 1 |
| SR-80 | 1 |
| Sr- 26 Liberty Rd | 1 |
| Sr-Green Valley Rd | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Frederick County) |
|---|---|
| Eisenhower Memorial Hwy | 465 |
| Balto National Pike | 222 |
| Catoctin Mountain Hwy | 174 |
| Liberty Rd | 71 |
| Jefferson National Pike | 67 |
| Buckeystown Pike | 65 |
| Green Valley Rd | 59 |
| Frederick Freeway | 57 |
ZIP 21770 at a glance
| Population | 8,751 |
| Density | 295 per sq mi |
| Median household income | $183,571 |
| Median home value | $632,695 |
| Home ownership | 99% |
Waste facilities and haulers nearby
Historical data: truck crashes in Frederick 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 | 78 | — | 3.6 |
| 2000s | 92 | +17% | 3.5 |
| 2010s | 128 | +40% | 3.7 |
| 2020s | 199 | +55% | 5.2 |
In the 1990s about 78 truck crashes a year were reported; in the 2020s, about 199. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 4.5 a year in 2016–19 and 5.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 21770
How many truck accidents are there in ZIP 21770?
Since 2015, 2,133 crashes involving commercial trucks were reported in Frederick County (974 injured, 60 killed).
Which road has the most fatal truck crashes in ZIP 21770?
NHTSA data shows I-70 with 8 fatal large-truck crashes within 10 miles of ZIP 21770 since 2015, the highest of any road.
Which month has the most truck crashes in ZIP 21770?
October has the most truck crashes in Frederick County, 9.6% of the yearly total.
How many garbage truck accidents happen in ZIP 21770?
50 crashes involving garbage or refuse trucks have been reported in Frederick County since 2015, 2.3% of all truck crashes.
What is the truck crash rate in ZIP 21770 compared with Maryland?
The yearly rate is 61.2 truck crashes per 100,000 residents in Frederick County, vs 49.3 for Maryland.
How can I plan a safer truck route in ZIP 21770?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.