| Network of Schools of Public Policy Affairs and AdministrationWashington | Form 990 | $2,248,625FY2025 |
| American College Personnel AssociationWashington | Form 990 | $2,223,940FY2025 |
| Association for the Sciences of Limnology and Oceanography IncWashington | Form 990 | $2,215,636FY2024 |
| National Hispanic Council on AgingWashington | Form 990 | $2,211,173FY2024 |
| Young VoicesWashington | Form 990 | $2,186,477FY2025 |
| Compass Pro BonoWashington | Form 990 | $2,102,998FY2025 |
| The Center for the Study of the Presidency and CongressWashington | Form 990 | $2,098,584FY2024 |
| Tudor Place Foundation IncWashington | Form 990 | $2,044,644FY2025 |
| District of Columbia Coalition Against Domestic ViolenceWashington | Form 990 | $1,996,608FY2025 |
| Jewish Women InternationalWashington | Form 990 | $1,974,023FY2025 |
| National Science & Technology Medals FoundationWashington | Form 990 | $1,959,968FY2024 |
| National Press Foundation IncWashington | Form 990 | $1,947,425FY2024 |
| National Bar Institute IncWashington | Form 990 | $1,911,509FY2024 |
| Students of Georgetown IncWashington | Form 990 | $1,905,803FY2025 |
| Bank Information CenterWashington | Form 990 | $1,883,755FY2024 |
| Acec Research InstituteWashington | Form 990 | $1,826,089FY2025 |
| Women in Film & Video IncWashington | Form 990 | $1,822,926FY2025 |
| Association for the Preservation of Historic Congressional CemeteryWashington | Form 990 | $1,806,726FY2024 |
| Council for Court ExcellenceWashington | Form 990 | $1,793,865FY2024 |
| Organization of Chinese Americans IncWashington | Form 990 | $1,793,228FY2025 |
| Pathways International UsWashington | Form 990 | $1,778,885FY2024 |
| American Road and Transportation Builders Assoc TransportationWashington | Form 990 | $1,759,590FY2024 |
| Institute for Womens Policy ResearchWashington | Form 990 | $1,743,371FY2025 |
| Women in Government Foundation IncWashington | Form 990 | $1,723,416FY2024 |
| D C Rape Crisis CenterWashington | Form 990 | $1,718,751FY2025 |
| Upper Room Housing CorporationWashington | Form 990 | $1,718,198FY2025 |
| Deaf-Reach IncWashington | Form 990 | $1,713,743FY2025 |
| Bnai Brith Foundation of the United StatesWashington | Form 990 | $1,713,229FY2025 |
| Chi Eta Phi Sorority IncorporatedWashington | Form 990 | $1,694,477FY2025 |
| Hospice Foundation of America IncWashington | Form 990 | $1,682,277FY2025 |
| John S Mulholland Family Foundation IncWashington | Form 990 | $1,648,336FY2025 |
| At the Well Project IncWashington | Form 990 | $1,626,679FY2025 |
| National Coalition for the Homeless IncWashington | Form 990 | $1,624,280FY2025 |
| Religious Freedom CoalitionWashington | Form 990 | $1,613,396FY2025 |
| Friendship Childrens Center IncWashington | Form 990 | $1,601,813FY2024 |
| The Family Place IncorporatedWashington | Form 990 | $1,572,537FY2024 |
| Vida Senior CentersWashington | Form 990 | $1,567,884FY2025 |
| Citizens Against Government WasteWashington | Form 990 | $1,558,891FY2025 |
| National Defense University Foundation IncWashington | Form 990 | $1,546,798FY2025 |
| Fund for Investigative Journalism IncWashington | Form 990 | $1,546,143FY2024 |
| Jubilee JumpstartWashington | Form 990 | $1,530,608FY2025 |
| Association of Farmworker Opportunity Programs AfopWashington | Form 990 | $1,488,495FY2025 |
| Special Olympics District of Columbia IncWashington | Form 990 | $1,479,750FY2024 |
| U S English Foundation IncWashington | Form 990 | $1,456,980FY2025 |
| Anacostia Coordinating Council IncWashington | Form 990 | $1,456,173FY2025 |
| National Space SocietyWashington | Form 990 | $1,440,689FY2024 |
| The Association for Preservation Technology International IncWashington | Form 990 | $1,410,616FY2024 |
| The National Institute for Science Law and Public Policy IncWashington | Form 990 | $1,398,231FY2023 |
| Adc Research InstituteWashington | Form 990 | $1,376,681FY2024 |
| Center for Spiritual and Ethical Education IncWashington | Form 990 | $1,367,250FY2025 |