Quick answer
According to crimebycity.com's analysis of NHTSA data, the most dangerous city to drive in in North Dakota is Mandan, ND with 9.7 traffic deaths per 100,000 residents per year (2020–2024; Road Danger Score 63/100), vs a US average of 12.3.
Highest Traffic-Fatality Rates in North Dakota
Cities ranked by Road Danger Score — 5-year traffic deaths per 100,000 residents from NHTSA FARS.