Castlewood, SD truck route planning & crash data
Plan safer truck routes in Castlewood: commercial truck and garbage truck crashes in Castlewood and Hamlin County, dangerous roads, seasonality and route safety data for fleets. Patterns use Hamlin County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 49 truck crashes since 2015.
Deadliest roads
How Hamlin County compares with South Dakota
Hamlin County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Hamlin County stands out
Full comparison
| Measure (2015–2025) | Hamlin County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 59.3 | 42.0 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 4.7 | 5.2 | 3.4 | 10% below the state |
| Injuries per crash | 0.07 | 0.13 | 0.49 | 46% below the state |
| Garbage-truck share | 2.3% | 1.6% | 2.3% | 1.4× the state |
| On snow, slush or ice | 27.9% | 28.6% | 6.2% | same |
| Morning rush (6–10 am) | 18.6% | 22.2% | 23.7% | 16% below the state |
| In rain, sleet or snow | 11.6% | 17.5% | 13.8% | 34% below the state |
| Winter months (Nov–Mar) | 44.2% | 48.8% | 41.9% | 9% below the state |
| After dark | 16.3% | 22.8% | 24.8% | 29% below the state |
Compared with South Dakota, Hamlin County is lower on deaths per 100 crashes, injuries per crash and morning rush (6–10 am). It stands out for higher crashes per 100k residents / yr and garbage-truck share.
What stands out in Hamlin County: September worst month: 20.4% of truck crashes, vs 8.3% in an average month.
Overview
Since 2015, 49 crashes involving commercial trucks have been reported in Hamlin County. They injured 5 people and killed 2.
Across the years with complete reporting, that is roughly one truck crash every 93 days.
With 0 truck crashes reported in Castlewood since 2015, this page uses Hamlin County numbers for its patterns and comparisons.
When crashes happen
September has the most truck crashes, 20.4% of the yearly total, while May has the fewest (2.0%).
The five winter months (November to March) hold 44.2% of truck crashes, against 48.8% across South Dakota.
More truck crashes happen at 1–2 pm than at any other hour (14.3%).
Road surface: 27.9% of truck crashes were on snow, slush or ice (South Dakota: 28.6%).
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Castlewood since 2015: CR-465 Ave (1) and US-81 (1). No single road stands out.
Garbage & waste trucks
Garbage and refuse trucks were involved in 1 crash, 2.0% of the total, against 1.6% across South Dakota.
Route planning tips for Castlewood fleets
- Build extra time into September routes: it has the most truck crashes here.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Hamlin County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-465 Ave | 1 |
| US-81 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Hamlin County) |
|---|---|
| Sd Hwy 28 | 12 |
| US-81 | 10 |
| I-29 | 8 |
| Ave | 5 |
| Sd Hwy 22 | 4 |
| 181St St | 1 |
| 2Nd Ave | 1 |
| 461St Ave | 1 |
Castlewood at a glance
| Population | 716 |
| Land area | 1.1 sq mi |
| Density | 623 per sq mi |
| Median household income (ZIP 57223) | $92,424 |
| Median home value (ZIP 57223) | $241,302 |
Historical data: truck crashes in Hamlin 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 | — | 0.0 |
| 2000s | 3 | +55% | 0.1 |
| 2010s | 4 | +18% | 0.4 |
| 2020s | 4 | -12% | 0.2 |
From the 1990s to the 2020s, yearly reported truck crashes went from 2 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 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Castlewood
How many truck accidents are there in Castlewood?
49 truck crashes have been reported in Hamlin County since 2015, with 2 deaths and 5 injuries.
Which month has the most truck crashes in Castlewood?
The worst month is September: 20.4% of truck crashes in Hamlin County happen then.
Are garbage truck crashes common in Castlewood?
1 crash involving garbage or refuse trucks have been reported in Hamlin County since 2015, 2.0% of all truck crashes.
How does Castlewood compare with South Dakota for truck crashes?
The yearly rate is 59.3 truck crashes per 100,000 residents in Hamlin County, vs 42.0 for South Dakota.
How do I plan a garbage truck route in Castlewood?
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.