| Business | Phone |
| Us Consolidated Farm Svc Agcy 2914 Broadway Ave, Yankton 57078 | (605) 665-2662 |
| Us Consolidated Farm Svc Agcy 610 W 23rd St, Yankton 57078 | (605) 665-2662 |
| Us Interior Dept 31247 436th Ave, Yankton 57078 | (605) 665-9217 |
| Us Army Corps Of Engineers Gavins Point Dam, Yankton 57078 | (402) 667-7873 |