| Riverside History CenterRiverside | Form 990-EZ | $45,020FY2025 |
| Dunkerton Historical and Tourism AssociationDunkerton | Form 990-N | No figure |
| Greater Shenandoah Historical SocietyShenandoah | Form 990-N | No figure |
| Grand River Valley RadioMurray | Form 990-N | No figure |
| Vangarde ArtsSioux City | Form 990-EZ | $38,693FY2024 |
| Jane Young House FoundationWebster City | Form 990-N | No figure |
| European Rural Heritage InstituteClermont | Form 990-N | No figure |
| Eldon Depot Committee IncEldon | Form 990-N | No figure |
| Marion Historical Society IncorporatedMarion | Form 990-N | No figure |
| Vocal Arts Ensemble of Greater Des MoinesDes Moines | Form 990-EZ | $35,964FY2025 |
| Tracy House MuseumOcheyedan | Form 990-N | No figure |
| Friends of Nas Ottumwa IncOttumwa | Form 990-N | No figure |
| Atlantic Rock Island SocietyAtlantic | Form 990-N | No figure |
| Mohawk Danzers Mason CityMason City | Form 990-N | No figure |
| International Harvesters Collectors Iowa Chapter IncCedar Rapids | Form 990-N | No figure |
| City SoundsDes Moines | Form 990-N | No figure |
| Sac City MuseumSac City | Form 990-N | No figure |
| Kossuth County Agricultural and Motor Sports MuseumAlgona | Form 990-N | No figure |
| One for All Musical TheaterCarter Lake | Form 990-N | No figure |
| St Peter and Paul Historical FoundationSolon | Form 990-N | No figure |
| Roland Historical Society FoundationStory City | Form 990-N | No figure |
| North Iowa Childrens MuseumClear Lake | Form 990-N | No figure |
| Battin Heritage AssociationOgden | Form 990-N | No figure |
| New Century Art Guild IncElk Horn | Form 990-N | No figure |
| Central Iowa Honor FlightCouncil Bluffs | Form 990-N | No figure |
| Fort Des Moines Museum and Education CenterDes Moines | Form 990-N | No figure |
| Des Moines Historical Society of Des Moines IowaDes Moines | Form 990-N | No figure |
| Ames High Speech & Drama Booster ClubAmes | Form 990-N | No figure |
| Lynnville Historical SocietyLynnville | Form 990-N | No figure |
| Grand Opera House FoundationDubuque | Form 990 | $15,225FY2025 |
| Des Moines Heritage TrustDes Moines | Form 990-N | No figure |
| Vocal Artists of IowaCedar Rapids | Form 990-N | No figure |
| Wilton Archives LtdWilton | Form 990-N | No figure |
| Mississippi Valley Quilters GuildDavenport | Form 990-N | No figure |
| Iowa Chamber Music Collective CorpCedar Falls | Form 990-N | No figure |
| Area Viii of the American Guild of English Handbell Ringers IncJanesville | Form 990-N | No figure |
| Walldog Public ArtCenterville | Form 990-N | No figure |
| Harpers Ferry Area Heritage SocietyHarpers Ferry | Form 990-N | No figure |
| Lucas County Preservation AllianceChariton | Form 990 | $7,490FY2025 |
| Iowa Bosnian Cultural FoundationWaterloo | Form 990-N | No figure |
| Royal Drama Dance TeamDavenport | Form 990-N | No figure |
| Wild Cat Country Fest FoundationNewton | Form 990-N | No figure |
| Chinese Association of IowaDes Moines | Form 990-N | No figure |
| Terrace Hill Society FoundationDes Moines | Form 990-N | No figure |
| Amana Colonies Historical Sites FoundationAmana | Form 990 | $4,677FY2025 |
| Nudgers IncPerry | Form 990-N | No figure |
| Greater Des Moines Telangana Association Gdta IncWest Des Moines | Form 990-N | No figure |
| Black Resources IncDavenport | Form 990-N | No figure |
| Priestly Brotherhood of St Andrew 501C3Dubuque | Form 990-N | No figure |
| World Affairs Council of the Quad Cities IncDavenport | Form 990-N | No figure |