| Business | Phone |
| Aurora County Agent 401 N Main St, Plankinton 57368 | (605) 942-7754 |
| Aurora County Agriculture Bldg 1302 E 1st St, Plankinton 57368 | (605) 942-7967 |
| Aurora County Assessments Dir 401 N Main St, Plankinton 57368 | (605) 942-7164 |
| Aurora County Highway Supt 409 N Lawler St, Plankinton 57368 | (605) 942-7166 |
| Aurora County Janitor 401 N Main St, Plankinton 57368 | (605) 942-7968 |
| Aurora County Register-Deeds 401 N Main St, Plankinton 57368 | (605) 942-7161 |
| Aurora County Veterans Svc 401 N Main St, Plankinton 57368 | (605) 942-7150 |