ZIP 03230 (Danbury, NH) truck route planning & crash data
Plan safer truck routes around ZIP 03230: commercial truck and garbage truck crashes here and in Merrimack 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
0.0 deaths per 100 garbage-truck crashes vs 3.0 for all trucks.
Deadliest roads
How Merrimack County compares with New Hampshire
Merrimack County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Merrimack County stands out
Full comparison
| Measure (2015–2025) | Merrimack County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 42.2 | 30.4 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 3.0 | 2.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.37 | 0.39 | 0.49 | same |
| Garbage-truck share | 2.9% | 4.2% | 2.3% | 31% below the state |
| On snow, slush or ice | 23.5% | 20.2% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 29.8% | 29.3% | 23.7% | same |
| In rain, sleet or snow | 24.6% | 22.8% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 47.4% | 47.6% | 41.9% | same |
| After dark | 17.1% | 16.3% | 24.8% | same |
Compared with New Hampshire, Merrimack County is lower on garbage-truck share. It runs above New Hampshire on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
Merrimack County at a glance: February 12.5% of truck crashes happen in February, more than any other month.
Overview
Since 2015, 761 crashes involving commercial trucks have been reported in Merrimack County. They injured 277 people and killed 22.
That averages about one truck crash every 5 days in fully reported years.
When crashes happen
The worst month is February with 12.5% of truck crashes; the quietest is May at 6.6%.
Winter months (Nov–Mar) carry 47.4% of truck crashes, vs 47.6% for New Hampshire.
By time of day, 10–11 am stands out with 8.5% of truck crashes.
Snow, slush or ice was on the road in 23.5% of truck crashes, compared with 20.2% in New Hampshire.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 03230 happened on SR-11 (1) and SR-3A (1); no road leads clearly.
Garbage & waste trucks
Garbage trucks account for 21 of the truck crashes here, or 2.8%, compared with 4.2% in New Hampshire.
The most garbage-truck crashes happen in July (24%).
Deaths per 100 garbage-truck crashes: 0.0, vs 3.0 for all truck crashes.
Route planning tips for ZIP 03230 fleets
- Plan February schedules with more margin; it is the worst month for truck crashes in Merrimack County.
- Garbage-truck crashes here peak in July; review collection routes for that month.
- 23.5% of truck crashes were on snow, slush or ice, above New Hampshire; 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
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Merrimack County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-11 | 1 |
| SR-3A | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Merrimack County) |
|---|---|
| SR-3A | 9 |
| Dover Rd | 9 |
| N/Everett Tpk | 5 |
| Manchester St | 4 |
| N & Exit 3 | 4 |
| Hooksett Rd | 3 |
| I 89 N Mm 28.6 | 3 |
| I 89 S Mm 21.8 2 Miles N Of Exit 9 | 3 |
ZIP 03230 at a glance
| Population | 1,451 |
| Density | 14 per sq mi |
| Median household income | $71,685 |
| Median home value | $248,098 |
| Home ownership | 91% |
Waste facilities and haulers nearby
Historical data: truck crashes in Merrimack 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 | 33 | — | 0.8 |
| 2000s | 49 | +46% | 1.8 |
| 2010s | 58 | +20% | 1.0 |
| 2020s | 64 | +9% | 1.6 |
In the 1990s about 33 truck crashes a year were reported; in the 2020s, about 64. Reporting coverage also changed between these periods. Fatal large-truck crashes: 1.8 a year in 2016–19, 1.6 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 03230
How common are truck crashes in ZIP 03230?
761 truck crashes have been reported in Merrimack County since 2015, with 22 deaths and 277 injuries.
Which month has the most truck crashes in ZIP 03230?
The worst month is February: 12.5% of truck crashes in Merrimack County happen then.
How many garbage truck crashes are there in ZIP 03230?
Garbage trucks were involved in 21 reported crashes in Merrimack County since 2015 (2.8% of truck crashes).
What is the truck crash rate in ZIP 03230 compared with New Hampshire?
Merrimack County records 42.2 truck crashes per 100,000 residents a year, against 30.4 across New Hampshire.
What is the best way to plan truck routes in ZIP 03230?
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.