ZIP 94931 (Cotati, CA) truck route planning & crash data
Plan safer truck routes around ZIP 94931: commercial truck and garbage truck crashes here and in Sonoma 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
6.2 deaths per 100 garbage-truck crashes vs 3.0 for all trucks.
Deadliest roads
How Sonoma County compares with California
Sonoma County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Sonoma County stands out
Full comparison
| Measure (2015–2025) | Sonoma County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 27.0 | 33.2 | 49.7 | 19% below the state |
| Deaths per 100 crashes | 3.0 | 3.6 | 3.4 | 17% below the state |
| Injuries per crash | 0.50 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 3.3% | 1.6% | 2.3% | 2.0× the state |
| On snow, slush or ice | 0.4% | 0.9% | 6.2% | 62% below the state |
| Morning rush (6–10 am) | 28.5% | 23.5% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 8.7% | 6.5% | 13.8% | 1.3× the state |
| Winter months (Nov–Mar) | 38.1% | 40.2% | 41.9% | same |
| After dark | 17.6% | 29.1% | 24.8% | 40% below the state |
Sonoma County sits below California on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher injuries per crash, garbage-truck share and morning rush (6–10 am).
The headline for Sonoma County: 1 in 30 garbage-truck share of crashes is 3.3%, against 1.6% for California.
Overview
Since 2015, 1,502 crashes involving commercial trucks have been reported in Sonoma County. They injured 778 people and killed 43.
In complete reporting years that works out to about one truck crash every 3 days.
When crashes happen
The worst month is October with 10.5% of truck crashes; the quietest is April at 7.4%.
November through March accounts for 38.1% of truck crashes here, compared with 40.2% in California.
By time of day, 8–9 am stands out with 8.8% of truck crashes.
Snow, slush or ice was on the road in 0.4% of truck crashes, compared with 0.9% in California.
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 94931 is SR-12, with 3 fatal large-truck crashes since 2015. Next come Todd Rd (2), US-101 (2) and CR-ADOBE Road (1).
Garbage & waste trucks
Garbage trucks account for 50 of the truck crashes here, or 3.3%, compared with 1.6% in California.
Garbage-truck crashes peak in March (18% of them).
Per 100 crashes, garbage trucks recorded 6.2 deaths compared with 3.0 for all trucks.
Route planning tips for ZIP 94931 fleets
- Build extra time into October routes: it has the most truck crashes here.
- Where you can, review stops along SR-12; it has the most fatal large-truck crashes nearby.
- Waste haulers: March is the peak month for garbage-truck crashes in Sonoma County.
- The morning rush (6–10 am) holds 28.5% of truck crashes here, more than California; adjust start times where you can.
- 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 Sonoma County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-12 | 3 |
| Todd Rd | 2 |
| US-101 | 2 |
| CR-ADOBE Road | 1 |
| CR-OLD Adobe Rd | 1 |
| CR-PEPPER Rd | 1 |
| Canfield Rd | 1 |
| Fulton Rd | 1 |
| Occidental Rd | 1 |
| SR-116 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Sonoma County) |
|---|---|
| Us-101 S/B | 10 |
| US-101 | 8 |
| Lakeville Road | 5 |
| Us-101 N/B | 4 |
| SR-37 | 3 |
| SR-116 | 3 |
| Rt116/Green Valley Rd | 3 |
| Rt101/300Ft N Steele Ln | 3 |
ZIP 94931 at a glance
| Population | 9,487 |
| Density | 474 per sq mi |
| Median household income | $101,994 |
| Median home value | $810,087 |
| Home ownership | 59% |
Waste facilities and haulers nearby
Historical data: truck crashes in Sonoma 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 | 1 | — | 4.5 |
| 2000s | 72 | +7070% | 3.0 |
| 2010s | 122 | +69% | 3.1 |
| 2020s | 119 | -2% | 2.8 |
In the 1990s about 1 truck crash a year were reported; in the 2020s, about 119. Reporting coverage also changed between these periods. NHTSA counts 4.5 fatal large-truck crashes a year in 2016–19 and 2.8 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 94931
How many truck crashes happen in ZIP 94931?
1,502 truck crashes have been reported in Sonoma County since 2015, with 43 deaths and 778 injuries.
What is the most dangerous road for trucks in ZIP 94931?
SR-12 had 3 fatal crashes involving a large truck within 10 miles of ZIP 94931 since 2015, more than any other road.
Which month has the most truck crashes in ZIP 94931?
The worst month is October: 10.5% of truck crashes in Sonoma County happen then.
How many garbage truck accidents happen in ZIP 94931?
Garbage trucks were involved in 50 reported crashes in Sonoma County since 2015 (3.3% of truck crashes).
How does ZIP 94931 compare with California for truck crashes?
Sonoma County records 27.0 truck crashes per 100,000 residents a year, against 33.2 across California.
How can I plan a safer truck route in ZIP 94931?
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.