| Business | Phone |
| Union County Commissioners 209 E Main St # 200, Elk Point 57025 | (605) 356-2041 |
| Union County Extension Agent 209 E Main St # 140, Elk Point 57025 | (605) 356-2321 |
| Union County Highway Shop 501 E Pleasant St, Elk Point 57025 | (605) 356-3251 |
| Union County Register Of Deeds 209 E Main St # 210, Elk Point 57025 | (605) 356-2191 |
| Union County Veteran Svc 209 E Main St, Elk Point 57025 | (605) 356-2181 |
| County Nurse 209 E Main St # 120, Elk Point 57025 | (605) 356-2644 |