| Albia Area Improvement AssociationAlbia | Form 990-N | No figure |
| North Iowa Corridor Housing Development CorporationMason City | Form 990 | -$61,173FY2025 |
| Association for Computing MachinerySioux City | Form 990-N | No figure |
| Association for Computing MachineryOskaloosa | Form 990-N | No figure |
| National Council on Youth LeadershipHills | Form 990 or 990-EZ | No figure |
| Association for Computing MachineryDubuque | Form 990-N | No figure |
| Association for Computing Machinery IncLamoni | Form 990-N | No figure |
| Home Bible Study GroupMount Pleasant | None required | No figure |
| Future Business Leaders of America Phi Beta Lambda IncCedar Falls | Form 990 or 990-EZ | No figure |
| Catholic Daughters of America 327 CamelitaNeola | None required | No figure |
| International Lutheran Laymens LeagueBayard | None required | No figure |
| International Lutheran Laymens LeagueMarshalltown | None required | No figure |
| International Lutheran Laymens LeagueMarshalltown | None required | No figure |
| Catholic Daughters of the AmericasGreene | None required | No figure |
| Catholic Daughters of the AmericasLe Mars | None required | No figure |
| Catholic Daughters of the AmericasMuscatine | None required | No figure |
| Lutheran Womens Missionary LeagueRobins | None required | No figure |
| Catholic Daughters of the AmericasJefferson | None required | No figure |
| Catholic Daughters of the AmericasNew Hampton | None required | No figure |
| Catholic Daughters of the AmericasDyersville | None required | No figure |
| Catholic Daughters of the AmericasWesley | None required | No figure |
| Catholic Daughters of the AmericasRock Rapids | None required | No figure |
| Catholic Daughters of the AmericasOelwein | None required | No figure |
| Catholic Daughters of the AmericasDow City | None required | No figure |
| Catholic Daughters of the AmericasBritt | None required | No figure |
| Catholic Daughters of the AmericasAlgona | None required | No figure |
| Catholic Daughters of the AmericasSioux City | None required | No figure |
| Catholic Daughters of the AmericasRock Valley | None required | No figure |
| Catholic Daughters of the AmericasSheldon | None required | No figure |
| Catholic Daughters of the AmericasEagle Grove | None required | No figure |
| Catholic Daughters of the AmericasMason City | None required | No figure |
| Catholic Daughters of the AmericasIowa City | None required | No figure |
| Catholic Daughters of the AmericasCedar Falls | None required | No figure |
| Catholic Daughters of the AmericasEmmetsburg | None required | No figure |
| Catholic Daughters of the AmericasProtivin | None required | No figure |
| Catholic Daughters of the AmericasCalmar | None required | No figure |
| Catholic Daughters of the AmericasWaucoma | None required | No figure |
| Catholic Daughters of the AmericasEstherville | None required | No figure |
| Catholic Daughters of the AmericasManchester | None required | No figure |
| Catholic Daughters of the AmericasAnkeny | None required | No figure |
| Catholic Daughters of the AmericasCedar Rapids | None required | No figure |
| Catholic Daughters of the AmericasDecorah | None required | No figure |
| Catholic Daughters of the AmericasPocahontas | None required | No figure |
| Catholic Daughters of the AmericasAlgona | None required | No figure |
| Catholic Daughters of the AmericasMilford | None required | No figure |
| Catholic Daughters of the AmericasBode | None required | No figure |
| Catholic Daughters of the AmericasSibley | None required | No figure |
| Catholic Daughters of the AmericasFarley | None required | No figure |
| Catholic Daughters of the AmericasMaquoketa | None required | No figure |
| Catholic Daughters of the AmericasSibley | None required | No figure |