| Business | Phone |
| Diamond Shamrock 15651 County Road E, Shamrock 79079 | (806) 256-1453 |
| Edwards Svc Station W Highway 66, Shamrock 79079 | (806) 256-3333 |
| Edwards' Chevron 15810 W Business 40, Shamrock 79079 | (806) 256-2411 |
| Lacy's Conoco 1800 N Main St, Shamrock 79079 | (806) 256-5175 |
| Diamond Shamrock Ih 40 E, Shamrock 79079 | (806) 256-2127 |