| Business | Phone |
| Dakota Layers Cooperative 22252 Sd Highway 13, Flandreau 57028 | (605) 997-2271 |
| Farmers Union Co Op Oil Co 100 Industrial Park Rd, Flandreau 57028 | (605) 997-3788 |
| Farmers Union Co Op Oil Co 1100 W Pipestone Ave, Flandreau 57028 | (605) 997-3788 |