| Villisca Theater CoVillisca | Form 990-N | No figure |
| French Icarian Colony Foundation IncDes Moines | Form 990-N | No figure |
| Iowa Quilters Guild IncWebster City | Form 990-N | No figure |
| Kellogg Historical Society IncKellogg | Form 990-N | No figure |
| Muscatine County Arts CouncilMuscatine | Form 990-N | No figure |
| Pocahontas County Iowa Historical SocietyLaurens | Form 990-N | No figure |
| American Guild of Organists North Iowa ChapterThompson | Form 990-N | No figure |
| Great River Amateur Radio ClubDubuque | Form 990-N | No figure |
| Porter House Museum IncorporatedDecorah | Form 990-N | No figure |
| Aspinwall Centennial AssociationAspinwall | Form 990-N | No figure |
| Chariton Valley PlayersChariton | Form 990-N | No figure |
| Life Engineering Foundation IncBridgewater | Form 990-N | No figure |
| Coggon Community HistoricalCoggon | Form 990-N | No figure |
| Shenandoah Music AssociationShenandoah | Form 990-N | No figure |
| Aurelia Heritage SocietyAurelia | Form 990-N | No figure |
| Iowa Poetry AssociationEarlham | Form 990-N | No figure |
| Iowa World Organization of China PaintersWest Des Moines | Form 990-N | No figure |
| Central Iowa Railroad ClubDes Moines | Form 990-N | No figure |
| Gateway Contemporary BalletClinton | Form 990-N | No figure |
| Countryside Community Theater IncEldridge | Form 990-N | No figure |
| Crestland Community Betterment Foundation LtdCreston | Form 990-N | No figure |
| Stockport Heritage SocietyStockport | Form 990-N | No figure |
| The Iowa Falls Community Theatre IncIowa Falls | Form 990-N | No figure |
| Moravia Area Historical SocietyMoravia | Form 990-N | No figure |
| Botna Valley Genealogical SocietyOakland | Form 990-N | No figure |
| Marble Rock Historical Society IncMarble Rock | Form 990-N | No figure |
| National Federation of Music ClubsIndependence | Form 990-N | No figure |
| Knoxville Area Community Theatre IncKnoxville | Form 990-N | No figure |
| Fort Dodge Fine Arts AssociationFort Dodge | Form 990-N | No figure |
| Poweshiek Historical and Genealogical SocietyMontezuma | Form 990-N | No figure |
| Mexican Fiesta Committee of Ft Madison IncFort Madison | Form 990-N | No figure |
| National Federation of Music ClubsWaterloo | Form 990-N | No figure |
| Wilton Fine Arts and Theatre GuildWilton | Form 990-N | No figure |
| St Marys Newport Cemetery AssociationSolon | Form 990-N | No figure |
| Indo American Association of IowaJohnston | Form 990-N | No figure |
| Wayne County Historical Foundation IncCorydon | Form 990-N | No figure |
| Ghost GarrisonAckley | Form 990-N | No figure |
| Mennonite Historical Society of IowaKalona | Form 990-N | No figure |
| Dubuque County Key City Genealogical SocietyAsbury | Form 990-N | No figure |
| Friends of Ames StringsAmes | Form 990-N | No figure |
| The Iowa Scottish Heritage SocietyDes Moines | Form 990-N | No figure |
| Emmetsburg Main Street TheatreEmmetsburg | Form 990-N | No figure |
| Decatur County Historical Society IncLeon | Form 990-N | No figure |
| Clermont Historical SocietyClermont | Form 990-N | No figure |
| Iowa Wrestling Hall of Fame FoundationCresco | Form 990-N | No figure |
| Frienship Force of Cedar Rapids Iowa City IncCedar Rapids | Form 990-N | No figure |
| Iowa Brass IncSolon | Form 990-N | No figure |
| Fairfield Area Community Theatre AssociationFairfield | Form 990-N | No figure |
| Indianola Concert Association IncIndianola | Form 990-N | No figure |
| Bettendorf Park Band FoundationDavenport | Form 990-N | No figure |