ZIP 03837 (Gilmanton Iron Works, NH) truck route planning & crash data
Plan safer truck routes around ZIP 03837: commercial truck and garbage truck crashes here and in Belknap 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
11 of 211 truck crashes since 2015.
Deadliest roads
How Belknap County compares with New Hampshire
Belknap County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Belknap County stands out
Full comparison
| Measure (2015–2025) | Belknap County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 28.6 | 30.4 | 49.7 | same |
| Deaths per 100 crashes | 3.9 | 2.6 | 3.4 | 1.5× the state |
| Injuries per crash | 0.37 | 0.39 | 0.49 | same |
| Garbage-truck share | 5.4% | 4.2% | 2.3% | 1.3× the state |
| On snow, slush or ice | 27.8% | 20.2% | 6.2% | 1.4× the state |
| Morning rush (6–10 am) | 31.7% | 29.3% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 21.5% | 22.8% | 13.8% | same |
| Winter months (Nov–Mar) | 48.8% | 47.6% | 41.9% | same |
| After dark | 11.7% | 16.3% | 24.8% | 28% below the state |
Compared with New Hampshire, Belknap County is lower on after dark. It runs above New Hampshire on deaths per 100 crashes, garbage-truck share and on snow, slush or ice.
Belknap County at a glance: December the month with the most truck crashes: 13.7% of the year's total.
Overview
Belknap County has recorded 211 truck crashes since 2015, with 82 people injured and 8 killed.
That averages about one truck crash every 20 days in fully reported years.
When crashes happen
Truck crashes peak in December (13.7% of the year) and are lowest in April (3.8%).
Winter months (Nov–Mar) carry 48.8% of truck crashes, vs 47.6% for New Hampshire.
More truck crashes happen at 7–8 am than at any other hour (11.8%).
Snow, slush or ice was on the road in 27.8% of truck crashes, compared with 20.2% in New Hampshire.
Where crashes happen
SR-106 leads within 10 miles of ZIP 03837 with 3 fatal crashes involving a large truck since 2015. It is followed by SR-11A (2) and SR-11 (1).
Garbage & waste trucks
Garbage trucks account for 11 of the truck crashes here, or 5.2%, compared with 4.2% in New Hampshire.
Route planning tips for ZIP 03837 fleets
- Build extra time into December routes: it has the most truck crashes here.
- Look at alternatives to SR-106 at busy times: it leads this area in fatal truck crashes.
- Morning starts matter: 31.7% of truck crashes fall between 6 and 10 am, higher than New Hampshire.
- Icy and snowy roads show up in 27.8% of truck crashes here, more than New Hampshire; schedule winter checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Belknap County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-106 | 3 |
| SR-11A | 2 |
| SR-11 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Belknap County) |
|---|---|
| Laconia Rd | 8 |
| SR-104 | 3 |
| Gilford Ave & Gunstock Hill Rd | 2 |
| I 93 Mm 70.6 | 2 |
| Intersection Of Route 104 & I-93N | 2 |
| Intersection Of Route 3 And Route 25B | 2 |
| Laconia Rd @ 5 Tilton Rd | 2 |
| Miles S Of 93 N & 23 | 2 |
ZIP 03837 at a glance
| Population | 1,451 |
| Density | 28 per sq mi |
| Median household income | $119,712 |
| Median home value | $409,352 |
| Home ownership | 100% |
Waste facilities and haulers nearby
Historical data: truck crashes in Belknap 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 | 11 | — | 0.1 |
| 2000s | 18 | +67% | 0.8 |
| 2010s | 18 | -1% | 0.5 |
| 2020s | 18 | +3% | 0.8 |
In the 1990s about 11 truck crashes a year were reported; in the 2020s, about 18. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 1.0 a year in 2016–19 and 0.8 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 03837
How many truck accidents are there in ZIP 03837?
Belknap County has had 211 reported truck crashes since 2015, injuring 82 people and killing 8.
What is the most dangerous road for trucks in ZIP 03837?
NHTSA data shows SR-106 with 3 fatal large-truck crashes within 10 miles of ZIP 03837 since 2015, the highest of any road.
Which month has the most truck crashes in ZIP 03837?
The worst month is December: 13.7% of truck crashes in Belknap County happen then.
Are garbage truck crashes common in ZIP 03837?
Garbage trucks were involved in 11 reported crashes in Belknap County since 2015 (5.2% of truck crashes).
How does ZIP 03837 compare with New Hampshire for truck crashes?
Per 100,000 residents, Belknap County has 28.6 truck crashes a year; New Hampshire has 30.4.
How can I plan a safer truck route in ZIP 03837?
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.