| PTA Delaware CongressWalkersville | Form 990-N | No figure |
| Northeastern Maryland Intergroup of Alcoholics Anonymous IncAberdeen | Form 990-EZ | $36,233FY2025 |
| Interfaith Community Action Council IncTemple Hills | Form 990-N | No figure |
| Society of the War of 1812 in the State of Maryland of BaltimoreColumbia | Form 990-N | No figure |
| PTA Delaware CongressPoolesville | Form 990-EZ | $34,987FY2025 |
| International Consciousness Research Labortories IncEldersburg | Form 990-EZ | $34,736FY2024 |
| Spruce Forest Artisan Village IncGrantsville | Form 990-N | No figure |
| St Andrews Society of Baltimore Foundation IncColumbia | Form 990-N | No figure |
| PTA Delaware CongressRockville | Form 990-N | No figure |
| Ephesians Four MinistriesElkton | Form 990-N | No figure |
| Mountain Club of Maryland IncTowson | Form 990-N | No figure |
| Cattail Chase Races IncEllicott City | Form 990-EZ | $33,246FY2024 |
| Box 234 Association IncBaltimore | Form 990-N | No figure |
| Winter Wonderland IncBel Air | Form 990-N | No figure |
| Fish of Howard County IncEllicott City | Form 990-N | No figure |
| PTA Delaware CongressTowson | Form 990-EZ | $31,032FY2025 |
| PTA Delaware CongressBel Air | Form 990-EZ | $31,009FY2026 |
| Friends of Gwynns Falls - Leakin Park IncBaltimore | Form 990-N | No figure |
| The Prince Georges County Maryland Natl Coalition of 100 Black WomeRiverdale | Form 990-EZ | $30,592FY2024 |
| Assoc for the Study of Classical African Civilizations FoundationSilver Spring | Form 990-N | No figure |
| Prologue Foundation IncBaltimore | Form 990-N | No figure |
| PTA Delaware CongressLaurel | Form 990-EZ | $29,433FY2026 |
| BBB Maryland Foundation IncBaltimore | Form 990-EZ | $28,086FY2024 |
| The Frostburg Museum Assn IncFrostburg | Form 990-N | No figure |
| PTA Delaware CongressPotomac | Form 990-N | No figure |
| PTA Delaware CongressClear Spring | Form 990-N | No figure |
| PTA Delaware CongressPotomac | Form 990-N | No figure |
| The Glenarden Track ClubHollywood | Form 990-N | No figure |
| Ace Mentor Program of America IncBaltimore | Form 990-N | No figure |
| PTA Delaware CongressPasadena | Form 990-N | No figure |
| Trip McNealy FoundationRockville | Form 990-N | No figure |
| The Good Knight Child Empowerment Network IncBeltsville | Form 990-N | No figure |
| Towels for Tears IncGaithersburg | Form 990-N | No figure |
| Philippines Missions IncHagerstown | Form 990-N | No figure |
| Russian Maryland Cultural CenterRockville | Form 990-N | No figure |
| PTA Delaware CongressWhite Marsh | Form 990-EZ | $24,886FY2025 |
| PTA Delaware CongressCentreville | Form 990-N | No figure |
| Teamkakata Association IncFrederick | Form 990-N | No figure |
| Place for Children IncBaltimore | Form 990-N | No figure |
| Helping Hands Food Pantry IncUpper Falls | Form 990-N | No figure |
| Montgomery County Students Construction Trades Foundation IncSilver Spring | Form 990-N | No figure |
| PTA Delaware CongressHanover | Form 990-N | No figure |
| New BeginningsOlney | Form 990-N | No figure |
| South River Music Boosters IncEdgewater | Form 990-N | No figure |
| Friends of the Aberdeen B and O Train Station IncAberdeen | Form 990-N | No figure |
| Ladies Aux of Ocean City Vol Fire Co IncOcean City | Form 990-N | No figure |
| Historical Society of Cecil CountyElkton | Form 990-N | No figure |
| PTA Delaware CongressStevensville | Form 990-N | No figure |
| Mca Educational Activities IncGlyndon | Form 990-N | No figure |
| Woodlawn Community Association IncHyattsville | Form 990-N | No figure |