| Name | Address, Zip |
| Elk Point Lodge No 3 Af & Am Of Elk Point South Dakota | Po Box 964, 57025-0964 |
| Elk Point Community Ambulance | Po Box 714, 57025-0714 |
| Modern Woodmen Of America | Po Box 780, 57025-0780 |
| Modern Woodmen Of America | Po Box 780, 57025-0780 |
| United Electrical Radio & Machine Workers Of America | Po Box 819, 57025-0819 |
| American Legion | 508 S Walnut St Apt 13, 57025-2259 |
| American Legion | Po Box 985, 57025-0985 |
| Siouxland India Cultural Association | Po Box 659, 57025-0659 |
| International Association Of Lions Clubs | Po Box 225, 57025-0225 |
| Recreation Development Association | Po Box 777, 57025-0777 |
| Elk Point Jefferson Baseball-softball Association | 600 S Pearl St, 57025-2139 |
| North Marin Water District Employees Association | 701 S Court St, 57025-2246 |
| Husky Youth Athletics | Po Box 1028, 57025-1028 |
| Veterans Of Foreign Wars Department Of South Dakota Aux Elk | 607 E Jefferson St, 57025-2268 |
| Edgars Basketball Inc | 308 S Grant St, 57025-2228 |
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| Battle Center Historical Foundation | Victoria Conover 1702 Jack Nicklas, 57025 |
| Brule Creek Lutheran Church | 31775 477th Ave, 57025-6627 |
| Elk Point Chamber | 308 S Grant St, 57025-2228 |
| Immanuel Lutheran Church | 607 W Main St, 57025-2295 |
| St Paul Lutheran Church | Po Box 370, 57025-0370 |
| Farm Mutual Insurance Co Of Clay County | 101 N Green St Ste D, 57025-2375 |
| Clay-union Foundation Inc | 204 S Douglas St, 57025-2428 |
| Tops Club Inc | Po Box 342, 57025-0342 |
| Union Farm Mutual Insurance Co | 101 N Green St Ste D, 57025-2375 |
| 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 Electric Cooperative Inc | 32708 477th Ave, 57025-6835 |
| Economic Development Corporation | 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 |
| Veterans Of Foreign Wars Of United States Department Of South Dakota | Po Box 742, 57025-0742 |
| Elk Point Volunteer Fire Department Inc | Po Box 400, 57025-0400 |
| Elk Point-jefferson Educational Foundation | 402 S Douglas St, 57025-2322 |
| Elk Point United Parish | 2102 E Main St, 57025-2481 |
| Elk Point Pink Ladies | Po Box 29, 57025-0029 |
| Independent Order Of Odd Fellows | Po Box 1222, 57025-1222 |
| 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 |
| St Paul | Po Box 370, 57025-0370 |
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