| Business | Phone |
| Us Consolidated Farm Svc Agcy 113 2nd Se, De Smet 57231 | (605) 854-9123 |
| Us Consolidated Farm Svc Agcy 202 Joliet Ave Se, De Smet 57231 | (605) 854-9123 |
| Us Soil Survey 112 Calumet Ave, De Smet 57231 | (605) 854-3597 |
| Natural Resources Conservation 2nd & Joliet Stamp;, De Smet 57231 | (605) 854-3812 |