ZIP 98611 (Castle Rock, WA) truck route planning & crash data
Plan safer truck routes around ZIP 98611: commercial truck and garbage truck crashes here and in Cowlitz 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
13 of 597 truck crashes since 2015.
Deadliest roads
How Cowlitz County compares with Washington
Cowlitz County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Cowlitz County stands out
Full comparison
| Measure (2015–2025) | Cowlitz County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 44.8 | 25.8 | 49.7 | 1.7× the state |
| Deaths per 100 crashes | 2.5 | 3.4 | 3.4 | 26% below the state |
| Injuries per crash | 0.17 | 0.18 | 0.49 | same |
| Garbage-truck share | 2.3% | 2.2% | 2.3% | same |
| On snow, slush or ice | 9.2% | 9.7% | 6.2% | same |
| Morning rush (6–10 am) | 24.6% | 24.8% | 23.7% | same |
| In rain, sleet or snow | 29.0% | 20.2% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 45.0% | 43.8% | 41.9% | same |
| After dark | 32.2% | 25.2% | 24.8% | 1.3× the state |
Cowlitz County sits below Washington on deaths per 100 crashes. Where it is higher: crashes per 100k residents / yr, in rain, sleet or snow and after dark.
The headline for Cowlitz County: 29.0% in rain, sleet or snow, against 20.2% across Washington.
Overview
Cowlitz County has recorded 597 truck crashes since 2015, with 109 people injured and 14 killed.
Across the years with complete reporting, that is roughly one truck crash every 7 days.
When crashes happen
Truck crashes peak in May (10.7% of the year) and are lowest in August (6.5%).
Winter months (Nov–Mar) carry 45.0% of truck crashes, vs 43.8% for Washington.
By time of day, 10–11 am stands out with 7.5% of truck crashes.
Road surface: 9.2% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of ZIP 98611 since 2015: I-5 (1) and SR-504 (1). No single road stands out.
Garbage & waste trucks
Garbage trucks account for 13 of the truck crashes here, or 2.2%, compared with 2.2% in Washington.
Route planning tips for ZIP 98611 fleets
- Plan May schedules with more margin; it is the worst month for truck crashes in Cowlitz County.
- 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 Cowlitz County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-5 | 1 |
| SR-504 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Cowlitz County) |
|---|---|
| Industrial Way | 8 |
| Sr-432*010.00 | 6 |
| 3Rd Ave Blk 500 | 4 |
| I-5 Mp 054.10 | 3 |
| Sr-432*004.40 | 3 |
| Sr-432*004.50 | 3 |
| Sr-433*001.00 | 3 |
| Tennant Way Blk 600 | 3 |
ZIP 98611 at a glance
| Population | 9,302 |
| Density | 26 per sq mi |
| Median household income | $86,322 |
| Median home value | $427,345 |
| Home ownership | 84% |
Waste facilities and haulers nearby
Historical data: truck crashes in Cowlitz 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 | 26 | — | 1.2 |
| 2000s | 37 | +40% | 0.5 |
| 2010s | 43 | +18% | 0.9 |
| 2020s | 56 | +29% | 1.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 26 to 56. Some of the change may reflect how crashes were reported. NHTSA counts 1.5 fatal large-truck crashes a year in 2016–19 and 1.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 98611
How many truck crashes happen in ZIP 98611?
Since 2015, 597 crashes involving commercial trucks were reported in Cowlitz County (109 injured, 14 killed).
When do most truck crashes happen in ZIP 98611?
Truck crashes in Cowlitz County peak in May, with 10.7% of the year's crashes.
How many garbage truck crashes are there in ZIP 98611?
Garbage trucks were involved in 13 reported crashes in Cowlitz County since 2015 (2.2% of truck crashes).
How does ZIP 98611 compare with Washington for truck crashes?
The yearly rate is 44.8 truck crashes per 100,000 residents in Cowlitz County, vs 25.8 for Washington.
How can I plan a safer truck route in ZIP 98611?
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.