| Business | Phone |
| Columbia County Grain Growers 1007 Mckay Alto Rd, Waitsburg 99361 | (509) 337-6329 |
| Northwest Grain Growers Inc 108 Bolles Rd, Waitsburg 99361 | (509) 337-6344 |
| Northwest Grain Growers Inc 110 Main St, Waitsburg 99361 | (509) 337-6633 |
| Northwest Grain Growers Inc 12869 E Highway 124, Waitsburg 99361 | (509) 337-6154 |
| Northwest Grain Growers Inc Coppei, Waitsburg 99361 | (509) 337-6330 |
| Northwest Grain Growers Inc Mc Kay Elevator, Waitsburg 99361 | (509) 337-6409 |
| Northwest Grain Growers Inc Menoken Elevator, Waitsburg 99361 | (509) 337-6408 |