ZIP 83323 (Declo, ID) truck route planning & crash data
Plan safer truck routes around ZIP 83323: commercial truck and garbage truck crashes here and in Cassia 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
4 of 462 truck crashes since 2015.
Deadliest roads
How Cassia County compares with Idaho
Cassia County against Idaho and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Cassia County stands out
Full comparison
| Measure (2015–2025) | Cassia County | Idaho | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 152.9 | 37.4 | 49.7 | 4.1× the state |
| Deaths per 100 crashes | 3.7 | 6.1 | 3.4 | 39% below the state |
| Injuries per crash | 0.65 | 0.55 | 0.49 | 1.2× the state |
| Garbage-truck share | 0.9% | 1.6% | 2.3% | 41% below the state |
| On snow, slush or ice | 23.3% | 16.0% | 6.2% | 1.5× the state |
| Morning rush (6–10 am) | 20.1% | 23.0% | 23.7% | 12% below the state |
| In rain, sleet or snow | 10.3% | 10.2% | 13.8% | same |
| Winter months (Nov–Mar) | 46.0% | 40.9% | 41.9% | 1.1× the state |
| After dark | 23.3% | 22.8% | 24.8% | same |
Compared with Idaho, Cassia County is lower on deaths per 100 crashes, garbage-truck share and morning rush (6–10 am). It runs above Idaho on crashes per 100k residents / yr, injuries per crash and on snow, slush or ice.
Cassia County at a glance: 23.3% share of truck crashes on snow, slush or ice (Idaho: 16.0%).
Overview
Police reported 462 crashes involving commercial trucks in Cassia County since 2015: 293 people were injured and 16 were killed.
That averages about one truck crash every 9 days in fully reported years.
When crashes happen
Truck crashes peak in March (10.8% of the year) and are lowest in May (6.1%).
November through March accounts for 46.0% of truck crashes here, compared with 40.9% in Idaho.
By time of day, 12–1 pm stands out with 8.2% of truck crashes.
23.3% of truck crashes here happened on snow, slush or ice, against 16.0% across Idaho.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of ZIP 83323 since 2015: I-84 (1), SR-81 (1) and Yale Rd (1). No single road stands out.
Garbage & waste trucks
4 crashes involved a garbage or refuse truck, a 0.9% share (Idaho: 1.6%).
Route planning tips for ZIP 83323 fleets
- Plan March schedules with more margin; it is the worst month for truck crashes in Cassia County.
- 23.3% of truck crashes were on snow, slush or ice, above Idaho; plan winter equipment checks before the season.
- 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 Cassia County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-84 | 1 |
| SR-81 | 1 |
| Yale Rd | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Cassia County) |
|---|---|
| I-84 | 204 |
| US-30 | 30 |
| Sh 81 | 29 |
| I-86 | 26 |
| Sh 27 | 19 |
| South | 19 |
| Sh 77 | 18 |
| East | 13 |
ZIP 83323 at a glance
| Population | 1,984 |
| Density | 4 per sq mi |
| Median household income | $60,625 |
| Median home value | $316,784 |
| Home ownership | 66% |
Waste facilities and haulers nearby
Historical data: truck crashes in Cassia 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 | 37 | — | 0.8 |
| 2000s | 42 | +14% | 0.8 |
| 2010s | 34 | -19% | 1.1 |
| 2020s | 37 | +8% | 1.2 |
In the 1990s about 37 truck crashes a year were reported; in the 2020s, about 37. Reporting coverage also changed between these periods. Fatal large-truck crashes: 1.2 a year in 2016–19, 1.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 83323
How many truck accidents are there in ZIP 83323?
462 truck crashes have been reported in Cassia County since 2015, with 16 deaths and 293 injuries.
What is the worst month for truck crashes in ZIP 83323?
Truck crashes in Cassia County peak in March, with 10.8% of the year's crashes.
How many garbage truck accidents happen in ZIP 83323?
Garbage trucks were involved in 4 reported crashes in Cassia County since 2015 (0.9% of truck crashes).
What is the truck crash rate in ZIP 83323 compared with Idaho?
Cassia County records 152.9 truck crashes per 100,000 residents a year, against 37.4 across Idaho.
What is the best way to plan truck routes in ZIP 83323?
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.