| Name | Deductibility Code |
| Affordable Community Housing Inc. | -- |
| Association for the Prevention of Family Violence Inc. | -- |
| Community Living Arrangements Inc. | -- |
| Elkhorn Area Ambulance Service Inc. | -- |
| Elkhorn Area High School Scholarship Foundation Inc. | -- |
| Elkhorn Basketball Club Inc. | -- |
| Elkhorn Fire-Rescue Explorer Post 911 | 4 |
| Elkhorn Food Pantry Inc. | -- |
| Elkhorn Youth Wrestling Club | -- |
| Family Resource Coalition of Walworth County Inc. | -- |
| Friends of Elkhorn Ch Tr | -- |
| Friends of Matheson Memorial Library Corp | -- |
| Friends of Northern Dogs Foundation Inc. | -- |
| Friends of the White River State Trail | -- |
| Haunting Inc. | -- |
| Holton Foundation Inc. | 4 |
| Holton-Elkhorn Band Ltd. | 4 |
| Hope Now Inc. | -- |
| Hugh and Marie Squires Scholarship Foundation Ltd. | 4 |
| Kettle Moraine Land Trust | -- |
| Kirt Fiegel Family Foundation Inc. | 4 |
| Lake Wandawega Improvement Association Inc. | -- |
| Lakeland Animal Welfare Society Inc. | -- |
| Lakeland Audubon Society Inc. | -- |
| Lakeland School Parents Advisory Committee Pac | -- |
| Lakelands Little Learners | -- |
| Lauderdale Lakes Aqua Skiers Inc. | -- |
| Lauderdale Lakes Yacht Club Safety and Education Fund | -- |
| Lutherdale Bible Camp Inc. | -- |
| Matheson Memorial Library Foundation Inc. | -- |
| Ministry to the Aging of Walworth County Wisconsin Inc. | -- |
| Mount Pleasant Cemetery Association | 6 |
| Nami Walworth Inc. | -- |
| Pregnancy Helpline of Walworth County Inc. | -- |
| Ray Foundation Inc. | -- |
| Rotary Club of Elkhorn Foundation Inc. | -- |
| Tom and Donna Neshek Family Foundation | 4 |
| Vip Services Inc. | -- |
| Walworth Co Historical Society | -- |
| Walworth County Agricultural Society | -- |
| Walworth County Crime Stoppers Inc. | -- |
| Walworth County Fair Foundation | -- |
| Walworth County Literacy Council Inc. | -- |
| Wisconsin Diamond Kings | -- |