ZIP 57231 (De Smet, SD) truck route planning & crash data
Plan safer truck routes around ZIP 57231: commercial truck and garbage truck crashes here and in Kingsbury 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
1 of 35 truck crashes since 2015.
Deadliest roads
How Kingsbury County compares with South Dakota
Kingsbury County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Kingsbury County stands out
Full comparison
| Measure (2015–2025) | Kingsbury County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 58.8 | 42.0 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 8.8 | 5.2 | 3.4 | 1.7× the state |
| Injuries per crash | 0.24 | 0.13 | 0.49 | 1.8× the state |
| Garbage-truck share | 2.9% | 1.6% | 2.3% | 1.8× the state |
| On snow, slush or ice | 14.7% | 28.6% | 6.2% | 49% below the state |
| Morning rush (6–10 am) | 38.2% | 22.2% | 23.7% | 1.7× the state |
| In rain, sleet or snow | 5.9% | 17.5% | 13.8% | 66% below the state |
| Winter months (Nov–Mar) | 38.2% | 48.8% | 41.9% | 22% below the state |
| After dark | 20.6% | 22.8% | 24.8% | 10% below the state |
Kingsbury County sits below South Dakota on on snow, slush or ice, in rain, sleet or snow and winter months (nov–mar). It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
What stands out in Kingsbury County: December worst month: 17.1% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 35 crashes involving commercial trucks in Kingsbury County since 2015: 8 people were injured and 3 were killed.
In complete reporting years that works out to about one truck crash every 118 days.
When crashes happen
December has the most truck crashes, 17.1% of the yearly total, while February has the fewest (0.0%).
Winter months (Nov–Mar) carry 38.2% of truck crashes, vs 48.8% for South Dakota.
More truck crashes happen at 10–11 am than at any other hour (17.1%).
14.7% of truck crashes here happened on snow, slush or ice, against 28.6% across South Dakota.
Where crashes happen
Fatal large-truck crashes within 10 miles of ZIP 57231 since 2015 were spread across roads: CR-200 St (1).
Garbage & waste trucks
1 crash involved a garbage or refuse truck, a 2.9% share (South Dakota: 1.6%).
Route planning tips for ZIP 57231 fleets
- Build extra time into December routes: it has the most truck crashes here.
- Morning starts matter: 38.2% of truck crashes fall between 6 and 10 am, higher than South Dakota.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Kingsbury County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-200 St | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Kingsbury County) |
|---|---|
| US-14 | 14 |
| US-81 | 9 |
| Sd Hwy 25 | 6 |
| Ave | 2 |
ZIP 57231 at a glance
| Population | 1,724 |
| Density | 3 per sq mi |
| Median household income | $78,646 |
| Median home value | $194,320 |
| Home ownership | 87% |
Waste facilities and haulers nearby
Historical data: truck crashes in Kingsbury 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 | 3 | — | 0.0 |
| 2000s | 3 | -7% | 0.2 |
| 2010s | 3 | +7% | 0.1 |
| 2020s | 4 | +17% | 0.4 |
From the 1990s to the 2020s, yearly reported truck crashes went from 3 to 4. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.2 a year in 2016–19 and 0.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 57231
How many truck crashes happen in ZIP 57231?
Kingsbury County has had 35 reported truck crashes since 2015, injuring 8 people and killing 3.
When do most truck crashes happen in ZIP 57231?
Truck crashes in Kingsbury County peak in December, with 17.1% of the year's crashes.
How many garbage truck crashes are there in ZIP 57231?
1 crash involving garbage or refuse trucks have been reported in Kingsbury County since 2015, 2.9% of all truck crashes.
How do truck crashes in ZIP 57231 compare with South Dakota?
Per 100,000 residents, Kingsbury County has 58.8 truck crashes a year; South Dakota has 42.0.
How can I plan a safer truck route in ZIP 57231?
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.