| Name | Deductibility Code |
| 100-Aker-Wood | -- |
| Church Evangelism Inc. | -- |
| Edward J and Alice M Maier Foundation | 4 |
| Fowler Center Inc. | -- |
| Holcomb Family Foundation | 4 |
| Mayville Area Ambulance Service | -- |
| Mayville Area Historical Museum | -- |
| Mayville Area Share Shop | -- |
| Mayville Golden Years Club | -- |
| Mayville Wrestling Club | -- |
| Shay Lake Association | -- |
| Tom Wargo Charity Golf Classic | -- |
| Your Future is Now Ministries | -- |