ZIP 78664 (Round Rock, TX) truck route planning & crash data
Plan safer truck routes around ZIP 78664: 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 has lower values than Texas for crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash. It runs above Texas on garbage-truck share, on snow, slush or ice and morning rush (6–10 am).
What stands out in ZIP 78664: 2.2× change in fatal truck crashes a year within 10 miles of ZIP 78664 (3.5 → 7.8).
Overview
Since 2015, 3,299 crashes involving commercial trucks have been reported in Williamson County. They injured 1,603 people and killed 90.
That averages about 1 truck crash a day in fully reported years.
When crashes happen
The worst month is August with 9.3% of truck crashes; the quietest is December at 7.2%.
Winter months (Nov–Mar) carry 39.5% of truck crashes, vs 40.8% for Texas.
More truck crashes happen at 7–8 am than at any other hour (8.0%).
Snow, slush or ice was on the road in 1.8% of truck crashes, compared with 1.7% in Texas.
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 78664 is I-35, with 17 fatal large-truck crashes since 2015. Next come SR-130 (8), US-79 (4) and SR-45 (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 78664 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.
- Garbage-truck crashes here peak in March; review collection routes for that month.
- Morning starts matter: 27.4% of truck crashes fall between 6 and 10 am, higher than Texas.
- Icy and snowy roads show up in 1.8% of truck crashes here, more than Texas; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 | 17 |
| SR-130 | 8 |
| US-79 | 4 |
| SR-45 | 3 |
| CR-CHANDLER Rd | 2 |
| Fm 1660 | 2 |
| Fm 734 | 2 |
| Mu-Pflugerville Pkwy | 2 |
| 183A Toll/Tx Hill Country Trl | 1 |
| CR-132 | 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 78664 at a glance
| Population | 62,060 |
| Density | 1,442 per sq mi |
| Median household income | $87,417 |
| Median home value | $358,148 |
| Home ownership | 54% |
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 |
In the 1990s about 112 truck crashes a year were reported; in the 2020s, about 328. Reporting coverage also changed between these periods. 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 78664
How common are truck crashes in ZIP 78664?
3,299 truck crashes have been reported in Williamson County since 2015, with 90 deaths and 1,603 injuries.
Where do fatal truck crashes happen most in ZIP 78664?
NHTSA data shows I-35 with 17 fatal large-truck crashes within 10 miles of ZIP 78664 since 2015, the highest of any road.
When do most truck crashes happen in ZIP 78664?
Truck crashes in Williamson County peak in August, with 9.3% of the year's crashes.
Are garbage truck crashes common in ZIP 78664?
50 crashes involving garbage or refuse trucks have been reported in Williamson County since 2015, 1.5% of all truck crashes.
What is the truck crash rate in ZIP 78664 compared with Texas?
Williamson County records 39.0 truck crashes per 100,000 residents a year, against 62.9 across Texas.
How do I plan a garbage truck route in ZIP 78664?
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.