ZIP 78665 (Round Rock, TX) truck route planning & crash data
Plan safer truck routes around ZIP 78665: commercial truck and garbage truck crashes here and in Williamson 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
2.0 deaths per 100 garbage-truck crashes vs 2.7 for all trucks.
Deadliest roads
How Williamson County compares with Texas
Williamson County against Texas and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Williamson County stands out
Full comparison
| Measure (2015–2025) | Williamson County | Texas | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 39.0 | 62.9 | 49.7 | 38% below the state |
| Deaths per 100 crashes | 2.7 | 4.1 | 3.4 | 34% below the state |
| Injuries per crash | 0.48 | 0.58 | 0.49 | 17% below the state |
| Garbage-truck share | 1.6% | 1.1% | 2.3% | 1.4× the state |
| On snow, slush or ice | 1.8% | 1.7% | 6.2% | 1.1× the state |
| Morning rush (6–10 am) | 27.4% | 22.6% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 7.6% | 11.3% | 13.8% | 32% below the state |
| Winter months (Nov–Mar) | 39.5% | 40.8% | 41.9% | same |
| After dark | 23.3% | 27.0% | 24.8% | 14% below the state |
Williamson County sits below Texas on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash. It stands out for higher garbage-truck share, on snow, slush or ice and morning rush (6–10 am).
ZIP 78665 at a glance: 1.8× change in fatal truck crashes a year within 10 miles of ZIP 78665 (3.2 → 6.0).
Overview
Williamson County has recorded 3,299 truck crashes since 2015, with 1,603 people injured and 90 killed.
That averages about 1 truck crash a day in fully reported years.
When crashes happen
August has the most truck crashes, 9.3% of the yearly total, while December has the fewest (7.2%).
November through March accounts for 39.5% of truck crashes here, compared with 40.8% in Texas.
More truck crashes happen at 7–8 am than at any other hour (8.0%).
1.8% of truck crashes here happened on snow, slush or ice, against 1.7% across Texas.
Where crashes happen
Within this area, I-35 had the most fatal crashes involving a large truck since 2015 (10). After it: SR-130 (7), US-79 (5) and CR-CHANDLER Rd (3).
Garbage & waste trucks
50 crashes involved a garbage or refuse truck, a 1.5% share (Texas: 1.1%).
Garbage-truck crashes peak in March (12% of them).
They recorded 2.0 deaths per 100 crashes, against 2.7 for all trucks.
Route planning tips for ZIP 78665 fleets
- Plan August schedules with more margin; it is the worst month for truck crashes in Williamson County.
- Check whether your routes use I-35, the road with the most fatal truck crashes in this area.
- For residential and commercial waste routes, look again at March schedules: garbage-truck crashes peak then.
- Morning starts matter: 27.4% of truck crashes fall between 6 and 10 am, higher than Texas.
- With 1.8% of truck crashes on snow, slush or ice (above Texas), plan winter equipment 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 Williamson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-35 | 10 |
| SR-130 | 7 |
| US-79 | 5 |
| CR-CHANDLER Rd | 3 |
| Fm 1660 | 3 |
| Mu-Pflugerville Pkwy | 2 |
| SR-29 | 2 |
| SR-45 | 2 |
| CR-132 | 1 |
| Fm 734 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Williamson County) |
|---|---|
| Chandler Rd | 62 |
| University Blvd | 42 |
| Sh 195 | 41 |
| Sh 130 | 31 |
| Williams Dr | 30 |
| I-35 | 28 |
| Limmer Loop | 27 |
| Louis Henna Blvd | 23 |
ZIP 78665 at a glance
| Population | 66,171 |
| Density | 1,061 per sq mi |
| Median household income | $122,680 |
| Median home value | $473,479 |
| Home ownership | 61% |
Waste facilities and haulers nearby
Historical data: truck crashes in Williamson 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 | 112 | — | 4.4 |
| 2000s | 169 | +50% | 4.9 |
| 2010s | 175 | +4% | 3.5 |
| 2020s | 328 | +87% | 10.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 112 to 328. Some of the change may reflect how crashes were reported. NHTSA counts 4.0 fatal large-truck crashes a year in 2016–19 and 10.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 78665
How many truck crashes happen in ZIP 78665?
3,299 truck crashes have been reported in Williamson County since 2015, with 90 deaths and 1,603 injuries.
What is the most dangerous road for trucks in ZIP 78665?
NHTSA data shows I-35 with 10 fatal large-truck crashes within 10 miles of ZIP 78665 since 2015, the highest of any road.
What is the worst month for truck crashes in ZIP 78665?
Truck crashes in Williamson County peak in August, with 9.3% of the year's crashes.
How many garbage truck accidents happen in ZIP 78665?
Garbage trucks were involved in 50 reported crashes in Williamson County since 2015 (1.5% of truck crashes).
How does ZIP 78665 compare with Texas for truck crashes?
The yearly rate is 39.0 truck crashes per 100,000 residents in Williamson County, vs 62.9 for Texas.
What is the best way to plan truck routes in ZIP 78665?
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.