| Quad City Helicopter Emergency Medical ServiceBettendorf | Form 990 | $11,738,253FY2025 |
| Goserv Global IncAnkeny | Form 990 | $2,643,641FY2025 |
| Iowa Statewide Poison Control CenterSioux City | Form 990 | $2,530,893FY2025 |
| Andover Volunteer Fire DepartmentAndover | Form 990 | $740,281FY2025 |
| Asbury Community Fire DepartmentAsbury | Form 990 | $707,380FY2025 |
| Logan Volunteer Fire & RescueLogan | Form 990 | $637,300FY2025 |
| Dubuque County Firefighters AssnDubuque | Form 990 | $581,611FY2024 |
| Lisbon-Mt Vernon Ambulance ServiceMount Vernon | Form 990 | $535,794FY2025 |
| Lewis Township Fire and RescueCouncil Bluffs | Form 990 | $534,979FY2025 |
| Kalona Volunteer Fire DepartmentKalona | Form 990 | $458,138FY2024 |
| Iowa Falls Firefighters IncIowa Falls | Form 990 | $456,547FY2024 |
| Jefferson-Monroe Fire Department IncSwisher | Form 990 | $433,330FY2025 |
| Centralia-Peosta Community Fire DepartmentPeosta | Form 990 | $410,417FY2025 |
| Northwood Volunteer Fire DepartmentNorthwood | Form 990 | $399,102FY2025 |
| Eldridge Volunteer Fire CoEldridge | Form 990 | $306,212FY2024 |
| Dewitt Volunteer Fire Department IncDe Witt | Form 990 | $297,177FY2025 |
| Delhi Volunteer Fire Department Andfirst RespondersDelhi | Form 990 | $291,112FY2024 |
| St Florian Fire & Burn FoundationSioux City | Form 990 | $286,327FY2025 |
| Hospers Firefighters Association IncorporatedHospers | Form 990 | $282,656FY2024 |
| Epworth Community Fire DepartmentEpworth | Form 990 | $279,068FY2026 |
| Bernard Community Fire Service Association of Bernard IowaBernard | Form 990 | $268,415FY2025 |
| Manchester Fire FightersassociationManchester | Form 990 | $264,501FY2025 |
| Iowa Hunter Education Instructor AssociationDes Moines | Form 990 | $260,141FY2025 |
| La Motte Community Fire DepartmentincLa Motte | Form 990 | $247,970FY2025 |
| Shop on State IncOsage | Form 990 | $247,281FY2026 |
| Hinton Fire RescueHinton | Form 990 | $241,634FY2025 |
| Rudd Community Fire ServiceRudd | Form 990 | $227,294FY2025 |
| West Liberty & Rural Townships Fire & EMS AssociationWest Liberty | Form 990 | $223,594FY2025 |
| C B S Fire AssociationShellsburg | Form 990 | $212,746FY2025 |
| New Providence Fire Department FoundationNew Providence | Form 990 | $212,132FY2024 |
| Anthon Community Fire DepartmentAnthon | Form 990 | $210,785FY2024 |
| Mondamin Fire-Rescue IncMondamin | Form 990 | $200,660FY2025 |
| Newark Colfax Township Fire BoardVincent | Form 990 | $197,704FY2024 |
| Wesley Fire Department IncWesley | Form 990-EZ | $182,206FY2025 |
| New Liberty Volunteer Fire DepartmentNew Liberty | Form 990-EZ | $173,724FY2025 |
| Guthrie Cnter Fire FightersGuthrie Center | Form 990-EZ | $169,058FY2025 |
| Sloan Community Fire and Ambulance DepartmentSloan | Form 990 | $166,182FY2025 |
| Audubon Fire and Rescue Association IncorporatedAudubon | Form 990 | $166,172FY2024 |
| Area Emergency Medical & Transportation Service IncPostville | Form 990 | $165,990FY2025 |
| Melcher-Dallas Emergency Response AssociationMelcher-Dallas | Form 990-EZ | $164,822FY2025 |
| Greenfield Volunteer Fire Department FoundationGreenfield | Form 990-EZ | $160,753FY2024 |
| New Vienna & Luxembourg Community Fire Department IncNew Vienna | Form 990-EZ | $155,153FY2025 |
| Armstrong Benefited Fire DistrictArmstrong | Form 990 | $154,919FY2025 |
| Marengo Firefighters AssociationMarengo | Form 990 | $154,843FY2025 |
| Grand Mound Volunteer Fire DeptGrand Mound | Form 990 | $153,497FY2025 |
| Ely Volunteer Fire Department IncEly | Form 990-EZ | $151,051FY2025 |
| Readlyn Volunteer Fire Fighters Association IncorporatedReadlyn | Form 990-EZ | $140,936FY2025 |
| Holstein Fire & Ambulance AssociationHolstein | Form 990 | $137,289FY2024 |
| Bronson Fire Department IncBronson | Form 990-EZ | $135,582FY2024 |
| Wellman Volunteer Fire DepartmentWellman | Form 990 | $131,698FY2025 |