| Name | Deductibility Code |
| Community Ministry | -- |
| Faith in Christ Fellowship Church | -- |
| Heartland Care Center Inc. | -- |
| M-M-C Music Boosters | -- |
| Marcus & Amherst Cemetery Association Inc. | 6 |
| Marcus Community Fair | -- |
| Marcus Fire Dept | -- |
| Marcus for Progress Inc. | -- |
| Marcus Historical Society | -- |
| Marcus-Meriden-Cleghorn Community School Educational Foundation | -- |
| Mmc Athletic Boosters | -- |