| Business | Phone |
| American Electric Svc Duncan 73533 | (580) 255-6978 |
| Bishop Electric 710 W Main St, Duncan 73533 | (580) 255-2021 |
| Caldwell's Electric Heating 201 W Bois D Arc Ave, Duncan 73533 | (580) 255-5085 |
| D & F Davis Electric Rr 1 Box 63m, Duncan 73533 | (580) 252-1469 |
| Dewey's Electric & Air Cond Po Box 984, Duncan 73534 | (580) 255-6392 |
| Duesman Electric 307 N E St, Duncan 73533 | (580) 252-7420 |
| Ellsworth Electric Inc 4425 N Highway 81, Duncan 73533 | (580) 252-2967 |
| Gourney Electric 607 W Main St, Duncan 73533 | (580) 252-3187 |
| Heath Electric 5210 S 58th St, Duncan 73533 | (580) 252-0703 |
| Ken's Electric Plato Rd, Duncan 73533 | (580) 252-2898 |
| Yancy Electrical Svc Duncan 73533 | (580) 255-0944 |
| Taurus Electrical Svc 1003 S 14th St, Duncan 73533 | (580) 252-9508 |
| Patco Electrical Svc Inc 1301 S Highway 81, Duncan 73533 | (580) 255-0116 |
| Peck's Electric & Antenna Svc Rr 4 Box 242a, Duncan 73533 | (580) 255-5114 |
| Quality Electric 801 S Viola St, Duncan 73533 | (580) 252-8001 |
| R S Svc Inc 7806 N Highway 81, Duncan 73533 | (580) 255-6800 |