Home › Top 4 Car Dealers in Duncan, Oklahoma Find best Car Dealers in Duncan, Oklahoma, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Merit Chrysler Dodge Jeep Ram of Duncan US, Duncan, OK 735338703 US-81 Hunt Motor Company US, Duncan, OK 73533812 North US-81 Merit Chevrolet Buick GMC of Duncan US, Duncan, OK 735337755 US-81 Whitney Motor Company US, Duncan, OK 735331101 US-81 B