| Business | Phone |
| Corson County Extension Svc 108 1st St E, McIntosh 57641 | (605) 273-4368 |
| Corson County Register-Deeds 108 1st St E, McIntosh 57641 | (605) 273-4395 |
| Corson Veteran Svc Officer 115 Main St, McIntosh 57641 | (605) 273-4416 |
| Corson Veteran Svc Officer 905 Main St, McIntosh 57641 | (605) 273-4416 |