This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
Minnesota has no statewide bicycle-helmet law that applies to adult riders. Minnesota has no statewide bicycle helmet law for any age. A small number of municipalities (e.g., the city of Owatonna for participants in city-sponsored bicycle rodeos) impose limited helmet rules, but no city or county requires helmets for general road or path use.
What this means in practice
Because there's no statewide age mandate, adult riders in Minnesota aren't legally required to wear a helmet — but cycling-injury research still strongly recommends one. Local cities, school districts, and bike-share programs can impose stricter rules, so check the municipal code wherever you ride.