| Baltimore Rowing Club IncBaltimore | Form 990 | $401,980FY2025 |
| Essex Volunteer Fire Company IncEssex | Form 990 | $400,755FY2025 |
| Cheval Court IncRockville | Form 990 | $399,243FY2024 |
| The Federated Charities Corporation of FrederickFrederick | Form 990 | $396,564FY2025 |
| Steamship Trade Association Ofbaltimore Charitable Legacy IncMiddle River | Form 990 | $396,383FY2024 |
| American College Dance Association IncSeverna Park | Form 990 | $395,686FY2025 |
| Toolbank USA IncBaltimore | Form 990 | $391,456FY2024 |
| Society for Cryobiology IncBaltimore | Form 990 | $390,322FY2024 |
| Wolfsville Volunteer Fire Company IncMyersville | Form 990 | $389,112FY2025 |
| On Earth Peace Assembly IncNew Windsor | Form 990 | $384,684FY2024 |
| Pan American Society for Clinical Virology IncLutherville-Timonium | Form 990 | $384,559FY2025 |
| Accident Volunteer Fire Department IncorporatedAccident | Form 990 | $384,253FY2025 |
| Transportation Action Partnership of North Bethesda & Rockville IncBethesda | Form 990 | $381,383FY2025 |
| Habitat for Humanity International IncBerlin | Form 990 | $381,214FY2025 |
| Western Enterprise Fire CompanyHagerstown | Form 990 | $380,992FY2025 |
| Northpoint Edgemere Volunteer Fire DeptBaltimore | Form 990 | $375,945FY2025 |
| Islamic-American Zakat FoundationBethesda | Form 990 | $374,860FY2024 |
| NAMI Prince Georges County MD IncBowie | Form 990 | $374,838FY2024 |
| National Vulvodynia AssociationSilver Spring | Form 990 | $374,378FY2025 |
| Southern Maryland Youth Organization IncPomfret | Form 990 | $373,321FY2024 |
| Streetcar Suburbs Publishing IncHyattsville | Form 990 | $369,983FY2025 |
| The Bernie House IncAnnapolis | Form 990 | $369,894FY2024 |
| Anna Prayer Counseling IncFrederick | Form 990 | $365,198FY2025 |
| Rocky Mountain Oncology Society IncRockville | Form 990 | $364,556FY2024 |
| Zaching Against Cancer Foundation IncColumbia | Form 990 | $362,353FY2024 |
| The Independent Junior Fire Engine Company No 3 of HagerstownHagerstown | Form 990 | $360,945FY2025 |
| Blink of an Eye Integrative Center for Trauma Healing Advocacy andBaltimore | Form 990 | $360,277FY2025 |
| Leadership Anne Arundel IncAnnapolis | Form 990 | $357,892FY2025 |
| Ramsey Research Foundation IncTemple Hills | Form 990 | $356,723FY2025 |
| American Sokol Organization & Educational & Physical Culture OrgPerry Hall | Form 990 | $356,569FY2024 |
| Ellicott City Historic District Partnership IncorporatedEllicott City | Form 990 | $355,074FY2025 |
| Memorial Apartments CorporationBaltimore | Form 990 | $347,903FY2024 |
| Eastern Apicultural Society of North America IncHagerstown | Form 990 | $345,650FY2024 |
| Zoo Conservation Outreach GroupSilver Spring | Form 990 | $345,183FY2024 |
| Hughes Neighborhood Housing IncWheaton | Form 990 | $344,369FY2025 |
| Get on the BusLaurel | Form 990 | $337,186FY2024 |
| Help Association IncOwings | Form 990 | $335,606FY2025 |
| GB Charities IncTowson | Form 990 | $332,277FY2025 |
| Succor Transitional ProgramBaltimore | Form 990 | $332,024FY2024 |
| Baltimore County Police Foundation IncBaltimore | Form 990 | $329,639FY2024 |
| Indian Lake Christian Service CampDarlington | Form 990 | $323,542FY2025 |
| Roland Park Baseball Leagues IncBaltimore | Form 990 | $323,367FY2024 |
| Reservoir Hill Improvement Council IncBaltimore | Form 990 | $322,855FY2024 |
| Lake Shore Athletic AssociationPasadena | Form 990 | $320,957FY2025 |
| Columbia Chamber Orchestra of Howard CountyEllicott City | Form 990 | $319,770FY2025 |
| Midatlantic Fiber Association IncLutherville | Form 990 | $318,742FY2025 |
| Leitersburg Volunteer Fire CompanyHagerstown | Form 990 | $318,279FY2025 |
| Clinical Orthopaedic Society IncTowson | Form 990 | $316,416FY2024 |
| National Council for Geographic EducationGaithersburg | Form 990 | $316,163FY2025 |
| Stepping Towards a New Destinty CorporationColumbia | Form 990 | $315,605FY2025 |