| Name | Deductibility Code |
| Better Health for Iowans Foundation Inc. | 4 |
| Blair House Nonprofit Corp | -- |
| Camp Jubilee | -- |
| Camp R E E C E | -- |
| Church of Christ of Washington Iowa | -- |
| Coalition for Senior or Community Services | -- |
| Community Chest of Washington Iowa | -- |
| Fluffybutts Rescue Resort Incorporated | -- |
| Greater Washington Area Howard Jones Crusade | -- |
| Hamakua Youth Center | -- |
| Handicap Housing Foundation Inc. | -- |
| Hospice of Washington County Inc. | -- |
| Iowa Civil Air Patrol Foundation | -- |
| James Belisle Missionary Evangelism Inc. | -- |
| Lake Darling Youth Center Inc. | -- |
| Lending Hands Inc. | -- |
| Love Our Kids | -- |
| Pure Water for All Foundation Inc. | -- |
| Riverside Community Foundation Incorporated | 4 |
| Safe Water International Ministries | -- |
| Saint James Foundation Inc. | -- |
| Southeast Iowa Emergency Medical Services Council | -- |
| Southeast Iowa Mennonite Camp Association Inc. | -- |
| United Presbyterian Home | -- |
| Veterans Memorial Association of Washington County Iowa | 6 |
| Wacan Inc. | -- |
| Washington Area Amateur Radio Club | -- |
| Washington Area Baseball Council Inc. | -- |
| Washington Area Softball Association Inc. | -- |
| Washington Athletic Booster Club Inc. | -- |
| Washington Community School District Foundation | -- |
| Washington Community Theater Inc. | 4 |
| Washington Concert Association Inc. | -- |
| Washington County Conservation Foundation | -- |
| Washington County Ems Association | -- |
| Washington County Enrichment Foundation Inc. | -- |
| Washington County Fair Association | -- |
| Washington County Genealogical Society | -- |
| Washington County Hospital | -- |
| Washington County Hospital Foundation | -- |
| Washington County Humane Society | -- |
| Washington County Mini Bus Inc. | -- |
| Washington Free Public Library Foundation | -- |
| Washington Iowa Betterment Foundation | -- |
| Washington Pre-School | -- |
| Washington Railroad Historical Society Inc. | -- |
| Wcdc Inc. | -- |
| Wcdc Inc. Foundation | -- |
| Young Mens Christian Association of Washington Iowa | -- |
| Young Womens Christian Association | -- |