| Aopa FoundationFrederick | Form 990 | $17,520,164FY2024 |
| Chesapeake Region Safety Council IncBaltimore | Form 990 | $6,623,914FY2025 |
| United States Bomb Technician AssociationIndian Head | Form 990 | $6,022,986FY2024 |
| Carroll County Volunteer Emergency Service Association IncWestminster | Form 990 | $5,627,312FY2025 |
| Ocean Pines Volunteer Fire Department IncOcean Pines | Form 990 | $3,669,850FY2026 |
| Berlin Fire Company Emergency Medical Services IncBerlin | Form 990 | $2,617,919FY2025 |
| Takecare Relief Fund IncBethesda | Form 990 | $2,457,232FY2025 |
| North East Fire Co IncNorth East | Form 990 | $2,448,534FY2025 |
| Cobb Island Volunteer Fire Department & EMS IncorporatedCobb Island | Form 990 | $2,396,614FY2025 |
| The Maryland State Firefighters Association IncCrofton | Form 990 | $2,385,239FY2025 |
| Aberdeen Fire Department IncorporatedAberdeen | Form 990 | $2,279,716FY2025 |
| Abingdon Fire CompanyAbingdon | Form 990 | $2,257,213FY2025 |
| National Center for Healthy Housing IncColumbia | Form 990 | $2,145,062FY2025 |
| Leonardtown Volunteer Fire Department IncLeonardtown | Form 990 | $2,063,804FY2025 |
| Hebron Volunteer Fire Department IncorporatedHebron | Form 990 | $1,996,220FY2025 |
| Hollywood Volunteer Fire Department IncHollywood | Form 990 | $1,962,083FY2025 |
| Volunteer Fire Company of Halfway Maryland IncorporatedHagerstown | Form 990 | $1,903,609FY2025 |
| Washington County Volunteer Fire & Rescue Association of Maryland IncHagerstown | Form 990 | $1,897,873FY2025 |
| Fruitland Volunteer Fire Company IncFruitland | Form 990 | $1,886,913FY2026 |
| Ellicott City Volunteer Firemans Association IncEllicott City | Form 990 | $1,871,903FY2025 |
| Vigilant Hose Co of EmmitsburgEmmitsburg | Form 990 | $1,861,250FY2025 |
| Chestnut Ridge Volunteer Fire CompanyOwings Mills | Form 990 | $1,851,356FY2025 |
| The Community Fire Company of Rising Sun IncorporatedRising Sun | Form 990 | $1,805,250FY2025 |
| Water Witch Fire Co IncPort Deposit | Form 990 | $1,711,532FY2025 |
| Second District Volunteer Fire Dept & Rescue Squad IncValley Lee | Form 990 | $1,642,598FY2025 |
| Hughesville Vol Fire Dept and Resue Squad IncHughesville | Form 990 | $1,621,257FY2025 |
| Rockville Volunteer Fire Dept IncRockville | Form 990 | $1,544,326FY2025 |
| Wheaton Rescue Squad IncWheaton | Form 990 | $1,498,816FY2025 |
| Huntingtown Volunteer Fire Department Rescue SquadHuntingtown | Form 990 | $1,483,077FY2025 |
| Fallston Volunteer Fire and Ambulance Co IncFallston | Form 990 | $1,435,220FY2025 |
| Alvin S Mintzes Hatzalah of Baltimore IncBaltimore | Form 990 | $1,415,960FY2024 |
| Joppa Magnolia Volunteer Fire Co IncJoppa | Form 990 | $1,397,968FY2025 |
| Parsonsburg Fire Co IncParsonsburg | Form 990 | $1,328,331FY2024 |
| Reese and Community Volunteer Fire CompanyWestminster | Form 990 | $1,307,231FY2025 |
| Arbutus Volunteer Fire Dept of Baltimore County IncBaltimore | Form 990 | $1,259,038FY2025 |
| Bryans Road Vol Fire Dept & Rescue Squad IncBryans Road | Form 990 | $1,253,397FY2025 |
| Carroll Manor Fire Co IncAdamstown | Form 990 | $1,235,591FY2024 |
| Jarrettsville Volunteer Fire Co IncJarrettsville | Form 990 | $1,218,935FY2025 |
| Goodwill Fire Company IncorporatedCentreville | Form 990 | $1,200,208FY2025 |
| United Communities Vol Fire Dept Incorporated RomancokeStevensville | Form 990 | $1,194,898FY2025 |
| Pleasant Valley Community Fire CoWestminster | Form 990 | $1,193,244FY2026 |
| Westminster Fire Engine and Hose Company No 1 IncWestminster | Form 990 | $1,176,353FY2025 |
| Potomac Heights Volunteer Fire Dept and Rescue Squad IncorporatedIndian Head | Form 990 | $1,151,064FY2025 |
| Princess Anne Volunteer Fire Company IncPrincess Anne | Form 990 | $1,121,132FY2025 |
| Winfield Community Volunteer Fire Department IncSykesville | Form 990 | $1,118,058FY2025 |
| Tenth District Volunteer Fire DeptIndian Head | Form 990 | $1,114,926FY2025 |
| White Marsh Volunteer Fire Company IncWhite Marsh | Form 990 | $1,099,790FY2026 |
| Upperco Volunteer Fire Company IncUpperco | Form 990 | $1,095,207FY2025 |
| Friendsville Volunteer Fire and Rescue Department IncFriendsville | Form 990 | $1,085,008FY2024 |
| United STEAM Fire Engine Co-3Frederick | Form 990 | $1,052,198FY2025 |