Quick answer
According to crimebycity.com's analysis of NHTSA data, the most dangerous city to drive in in South Dakota is Spearfish, SD with 8.8 traffic deaths per 100,000 residents per year (2020–2024; Road Danger Score 56/100), vs a US average of 12.3.
Highest Traffic-Fatality Rates in South Dakota
Cities ranked by Road Danger Score — 5-year traffic deaths per 100,000 residents from NHTSA FARS.
| # | City | Danger Score | Deaths per 100K/yr | Deaths 2020–2024 | Alcohol % | Speeding % |
|---|---|---|---|---|---|---|
| 1 | Spearfish | 56/100 | 8.8 | 6 | 0% | 50% |
| 2 | Rapid City | 56/100 | 8.6 | 35 | 21% | 36% |
| 3 | Sioux Falls | 33/100 | 5.7 | 60 | 38% | 32% |
| 4 | Aberdeen | 7/100 | 2.1 | 3 | 0% | 33% |