| Name | Deductibility Code |
| Art Association of Oswego Inc. | -- |
| Arts & Culture for Oswego County | -- |
| Auxiliary Services State University College at Oswego Inc. | -- |
| Bible Baptist Church | -- |
| Bishops Commons Inc. | -- |
| Buccaneer Boosters Inc. | -- |
| Calvary Oswego Inc. | -- |
| Central New York Avian Rescue Inc. | -- |
| Chabad of Oswego Inc. | -- |
| Charles E Riley Hsa Inc. | -- |
| Children Center of Oswego Inc. | -- |
| Childrens Board of Oswego New York | -- |
| Church of Christ of Oswego | -- |
| Community Partnership for Children Inc. | -- |
| Continental Arms Collectors Association Inc. | -- |
| County of Oswego Council on Alcoholism and Addictions Inc. | -- |
| Elim Grace Christian Church | -- |
| Erik Cole Dream Big Foundation Inc. | -- |
| Fairdale Rural Cemetery Assoc Inc. | 6 |
| Families With Add and Other Serious Emotional Disabilities Inc. | -- |
| Farnham Inc. | -- |
| Fitzhugh Park Hsa Inc. | -- |
| Frederick Leighton Hsa Inc. | -- |
| Friends of Camp Hollis Inc. | -- |
| Friends of Fort Ontario Inc. | -- |
| Friends of Oswego County Hospice Inc. | -- |
| Friends of the Oswego Public Library Inc. | -- |
| Grace and Glory Ministries | -- |
| Grace Reformed Church | -- |
| Greyhound Outreach Inc. | -- |
| H Lee White Marine Museum Guild Inc. | -- |
| Harbor Festivals Guild Inc. | -- |
| Heritage Foundation of Oswego Inc. | -- |
| Human Concerns Inc. | -- |
| Integrated Community Planning of Oswego County Inc. | -- |
| John D Murray Firefighters Museum | -- |
| Kingsford Park Hsa Inc. | -- |
| Lord Hill Church | -- |
| Loretto-Oswego Health and Rehabilitation Center | -- |
| Loretto-Oswego Realty Corporation | -- |
| Mexico Central School Parent Teachers Club Inc. | -- |
| Michaud Residential Health Services Inc. | -- |
| Minetto Hsa Inc. | -- |
| New Covenant Community Church & Oswego Community Christian School | -- |
| New York American String Teachers Association Inc. | -- |
| New York State Amateur Softball Association Inc. | -- |
| North Scribe Baptist Church | -- |
| Oh Properties Inc. | -- |
| Old Ladies Home of Oswego | -- |
| Ontario Bible Conference Assoc Inc. | -- |
| Ontario Center for Performing Arts Inc. | -- |
| Operation Oswego County Foundation Inc. | -- |
| Oswego Alumni Association Inc. | -- |
| Oswego City Library | -- |
| Oswego City Revitalization Corporation | -- |
| Oswego City Veterans Council | -- |
| Oswego College Foundation Inc. | -- |
| Oswego Community Youth Orchestra Inc. | -- |
| Oswego County Animal Welfare League Inc. | -- |
| Oswego County Autism Task Force | -- |
| Oswego County Charitable Foundation | 4 |
| Oswego County Crisis Pregnancy Center Inc. | -- |
| Oswego County Humane Society Inc. | -- |
| Oswego County Mental Health Association | -- |
| Oswego Health Inc. | -- |
| Oswego Historical Society | -- |
| Oswego Hospital | -- |
| Oswego Maritime Alliance Inc. | -- |
| Oswego Maritime Foundation Inc. | -- |
| Oswego Middle School Has Inc. | -- |
| Oswego Minor Hockey Association | -- |
| Oswego Opera Theater Inc. | -- |
| Oswego Players | -- |
| Oswego Rotary Foundation Inc. | -- |
| Oswego School District Public Library | -- |
| Oswego Town Historical Society | -- |
| Oswego Youth Soccer Association Inc. | -- |
| Paws Across Oswego County Incorporated | -- |
| Proliteracy Worldwide | -- |
| Riverside Cemetery of Oswego Inc. | 6 |
| Safe Haven Inc. | -- |
| Sehsa Environmental Health & Safety Association of New York Inc. | -- |
| Seneca Hill Manor Inc. Oswego Hospital | -- |
| Society for Computational Economics | -- |
| Springside at Seneca Hill Inc. | -- |
| St. Luke Residential Health Care Facility Inc. | -- |
| State University College at Oswego Student Association | -- |
| Sunycap Inc. | -- |
| Take Charge Coalition Inc. | -- |
| The Foster Burden Corporation | -- |
| The James V Tesoriero Charitable Fund | 4 |
| The Oswego County Veterans Museum and Heritage Center | -- |
| The Workforce Development Board Inc. | -- |
| Town of Oswego Volunteer Fire Department Inc. | 6 |
| Una Voce-Syracuse | -- |
| Upstate New York Laborers Education & Training Funds Trust | -- |
| Weston T Hyde Oswego County Educational Foundation | -- |
| World Hindi Foundation Inc. | -- |
| Young Mens Christian Association of Oswego Inc. | -- |