| Name | Deductibility Code |
| Alcha Foundation Inc. | 4 |
| Clinton B Setz Memorial Scholarship Tr | 4 |
| Francis F Carnes Education Charitable Tr | 4 |
| Friends of Aztalan State Park | -- |
| Friends of Forth Park Inc. | -- |
| Friends of the Glacial Drumlin Trail Inc. | -- |
| Good Stewards Inc. | -- |
| J 8 12 Inc. | -- |
| L-Cat Booster Club | -- |
| Lake Mills Area Community Foundation Inc. | -- |
| Lake Mills Aztalan Historical Society Inc. | -- |
| Lake Mills Emergency Medical Services Inc. 132 Water St. | -- |
| Lake Mills Food Pantry Inc. | -- |
| Lake Mills High School Parent Teacher Student Organization | -- |
| Lake Mills Main Street Program Inc. | -- |
| Lake Mills Rotary Foundation Inc. | -- |
| Lakeside Lutheran Foundation Inc. | -- |
| Namaste Retreat Center of Wisconsin | -- |
| Rock Lake Activity Center Inc. | -- |
| Rock Lake Baptist Church Inc. | -- |
| Rock Lake Improvement Association Inc. | -- |
| Salty Earth Pictures Inc. | -- |
| The Ronald & Janet Niedfeldt Foundation | 4 |
| Todd Johnson Memorial Foundation | -- |
| Trinity Evangelical Church Endowment Foundation Inc. | -- |
| Trinity Pines Retirement Center Inc. | -- |
| William P Schmeisser Memorial Fund | -- |