Gregory County, SD truck route planning & crash data
Plan safer truck routes in Gregory County: commercial truck and garbage truck crashes, 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
0 of 36 truck crashes since 2015.
Deadliest roads
How Gregory County compares with South Dakota
Gregory County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Gregory County stands out
Full comparison
| Measure (2015–2025) | Gregory County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 73.0 | 42.0 | 49.7 | 1.7× the state |
| Deaths per 100 crashes | 3.0 | 5.2 | 3.4 | 42% below the state |
| Injuries per crash | 0.39 | 0.13 | 0.49 | 3.0× the state |
| Garbage-truck share | 0.0% | 1.6% | 2.3% | 100% below the state |
| On snow, slush or ice | 27.3% | 28.6% | 6.2% | same |
| Morning rush (6–10 am) | 33.3% | 22.2% | 23.7% | 1.5× the state |
| In rain, sleet or snow | 15.2% | 17.5% | 13.8% | 14% below the state |
| Winter months (Nov–Mar) | 72.7% | 48.8% | 41.9% | 1.5× the state |
| After dark | 39.4% | 22.8% | 24.8% | 1.7× the state |
Gregory County sits below South Dakota on deaths per 100 crashes, garbage-truck share and in rain, sleet or snow. It stands out for higher crashes per 100k residents / yr, injuries per crash and morning rush (6–10 am).
The headline for Gregory County: January 30.6% of truck crashes happen in January, more than any other month.
Overview
Police reported 36 crashes involving commercial trucks in Gregory County since 2015: 13 people were injured and 1 were killed.
In complete reporting years that works out to about one truck crash every 122 days.
When crashes happen
Truck crashes peak in January (30.6% of the year) and are lowest in April (0.0%).
Winter months (Nov–Mar) carry 72.7% of truck crashes, vs 48.8% for South Dakota.
More truck crashes happen at 9–10 am than at any other hour (13.9%).
27.3% of truck crashes here happened on snow, slush or ice, against 28.6% across South Dakota.
Where crashes happen
Roads with fatal crashes involving a large truck in Gregory County since 2015: US-281 (1). No single road stands out.
Garbage & waste trucks
FMCSA lists no garbage-truck crashes in Gregory County since 2015.
Route planning tips for Gregory County fleets
- Plan January schedules with more margin; it is the worst month for truck crashes in Gregory County.
- Morning starts matter: 33.3% of truck crashes fall between 6 and 10 am, higher than South Dakota.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Gregory County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Gregory County) |
|---|---|
| US-281 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Gregory County) |
|---|---|
| US-18 | 22 |
| Sd Hwy 44 | 8 |
| US-281 | 3 |
| Lucas Rd | 1 |
| Sd Hwy 47 | 1 |
Gregory County at a glance
| Population | 4,110 |
| Land area | 1,015.0 sq mi |
| Density | 4 per sq mi |
| Median household income (ZIP average) | $62,140 |
Waste facilities and haulers nearby
Historical data: truck crashes in Gregory 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 | 2 | — | 0.2 |
| 2000s | 2 | -5% | 0.4 |
| 2010s | 3 | +53% | 0.2 |
| 2020s | 4 | +26% | 0.0 |
Reported truck crashes averaged 2 a year in the 1990s and 4 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 0.2 a year in 2016–19, 0.0 a year in 2020–24.
Cities, towns & communities in Gregory County
ZIP codes in Gregory County
Nearby counties
Questions fleets ask about Gregory County
How many truck crashes happen in Gregory County?
36 truck crashes have been reported in Gregory County since 2015, with 1 deaths and 13 injuries.
Which month has the most truck crashes in Gregory County?
The worst month is January: 30.6% of truck crashes in Gregory County happen then.
How many garbage truck crashes are there in Gregory County?
0 crashes involving garbage or refuse trucks have been reported in Gregory County since 2015, 0.0% of all truck crashes.
What is the truck crash rate in Gregory County compared with South Dakota?
Per 100,000 residents, Gregory County has 73.0 truck crashes a year; South Dakota has 42.0.
What is the best way to plan truck routes in Gregory County?
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.