| Name | Address, Zip |
| Elk Point Community Ambulance | Po Box 714, 57025-0714 |
| Siouxland India Cultural Association | Po Box 659, 57025-0659 |
| Elk Point Jefferson Baseball-softball Association | 600 S Pearl St, 57025-2139 |
| Edgars Basketball Inc | 308 S Grant St, 57025-2228 |
| Battle Center Historical Foundation | Victoria Conover 1702 Jack Nicklas, 57025 |
| Clay-union Foundation Inc | 204 S Douglas St, 57025-2428 |
| Tops Club Inc | Po Box 342, 57025-0342 |
| Elk Point Community Pride | 280, 57025 |
| Friends Of The Elk Point Community Library | 402 S Douglas St, 57025-2322 |
| Elk Point Community Foundation | Po Box 280, 57025-0280 |
| Union County Health Foundation | Po Box 798, 57025-0798 |
| Union County Historical Society | Po Box 552, 57025-0552 |
| Fore The Cure | 610 S Pinckney St, 57025-2151 |
| Dakota Institute | Po Box 367, 57025-0367 |
| Elk Point Volunteer Fire Department Inc | Po Box 400, 57025-0400 |
| Elk Point-jefferson Educational Foundation | 402 S Douglas St, 57025-2322 |
| Elk Point Pink Ladies | Po Box 29, 57025-0029 |
| Hope Ministries | 401 S Pearl St, 57025-2367 |
| Mental Muscle Team | 606 E Main St, 57025-2188 |
| Unrivaled Traditions Outdoors | Po Box 144, 57025-0144 |
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