Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Visit the hotel Grand Casino Mille Lacs, which is in the state Minnesota (MN), city Onamia. Our hotel can be found at 777 Grand Avenue, Onamia, MN 56359. Great deals on best and cheap hotels. Your comments* (not for publishing) * — Required information Grand Casino Mille Lacs/777 Grand Avenue - Onamia - Minnesota (MN) ← View details 777 Grand Avenue, Onamia, MN 56359, Onamia, Minnesota (MN) Not available