| Pella Rolscreen Foundation | Pella | $1,000 | 649 | $7.9M |
| Meredith Corporation Foundation | Des Moines | $250 | 271 | $3.5M |
| Emc Insurance Foundation | Des Moines | $5,000 | 167 | $6.3M |
| Lsb Foundation | Reinbeck | $1,000 | 129 | $734K |
| Noonmark Foundation | Mount Vernon | $100 | 129 | $55K |
| The West Bancorporation Foundation Inc | West Des Moines | $2,500 | 122 | $1.1M |
| Iowa West Foundation | Council Bluffs | $37,500 | 111 | $64.1M |
| Max and Helen Guernsey | Cedar Falls | $18,000 | 108 | $7.9M |
| Greenstate Foundation | North Liberty | $10,000 | 97 | $1.9M |
| The Wellmark Foundation | Des Moines | $50,000 | 94 | $14.8M |
| Athene Charitable Foundation | West Des Moines | $2,000 | 90 | $10.1M |
| The Seidler Foundation | Des Moines | $5,000 | 85 | $8.5M |
| Charles E Lakin Foundation Inc | Council Bluffs | $10,000 | 85 | $51.4M |
| Peter H and E Lucille Gaass Kuyper | Pella | $5,000 | 83 | $3.9M |
| New Charitable Foundation | Fort Dodge | $500 | 80 | $705K |
| Interstates Foundation | Sioux Center | $1,500 | 79 | $998K |
| Change Happens Foundation | Urbandale | $10,000 | 77 | $2.6M |
| Roy J Carver Charitable Trust | Muscatine | $60,000 | 75 | $56.8M |
| First Citizens Charitable | Mason City | $3,000 | 72 | $1.7M |
| Winnebago Industries Foundation | Forest City | $10,000 | 68 | $8.4M |
| Hni Charitable Foundation | Muscatine | $1,000 | 68 | $2.6M |
| Todd and Mary Heistand Family | Woodbine | $20,000 | 68 | $7.0M |
| Berkshire Hathaway Energy Foundation | Des Moines | $22,500 | 63 | $15.6M |
| Dupaco Rw Hoefer Foundation | Dubuque | $3,000 | 62 | $523K |
| Mid-Iowa Health Foundation | Des Moines | $2,500 | 61 | $2.1M |
| The Goldstein Family Foundation | Bettendorf | $5,000 | 59 | $3.1M |
| Tomson Family Foundation Trust | Mason City | $3,000 | 57 | $4.2M |
| James B & Melita a Mcdonough | Dubuque | $3,550 | 57 | $1.0M |
| Otto Schoitz Foundation | Waterloo | $25,000 | 57 | $12.9M |
| John Ruan Foundation Trust | Urbandale | $10,000 | 54 | $17.7M |
| Violet G Young Charitable Trust | Des Moines | $1,000 | 53 | $311K |
| Grinnell Mutual Group Foundation | Grinnell | $1,608 | 47 | $696K |
| Iowa Savings Bank Charitable Foundation | Carroll | $250 | 47 | $285K |
| Gartner Family Foundation | Des Moines | $10,000 | 45 | $2.3M |
| Jd Nelson and Debra Nelson | Clear Lake | $8,000 | 44 | $1.3M |
| Esp International Charitable Foundation | Cedar Rapids | $362 | 43 | $146K |
| R J Mcelroy Trust | Waterloo | $10,000 | 42 | $4.5M |
| Home State Bank Charitable Foundation | Jefferson | $1,000 | 41 | $440K |
| Daniels Family Foundation Fka the | West Des Moines | $1,800 | 39 | $987K |
| Martin D & Barbara H Rich Family | Davenport | $1,287 | 38 | $495K |
| John P & Lawrence J Giacoletto Fnd | Marion | $8,000 | 37 | $1.5M |
| Martha Ellen Tye Foundation | Marshalltown | $5,500 | 37 | $4.3M |
| Bsl Foundation | Grimes | $1,000 | 36 | $245K |
| Henry Family Foundation | Dubuque | $2,500 | 36 | $719K |
| Charlotte and William Hinson | West Des Moines | $1,000 | 35 | $224K |
| Schwartz Family Foundation | Fairfield | $25,000 | 35 | $11.1M |
| Farrer Endowment Foundation | Mason City | $5,000 | 33 | $1.3M |
| Sirk Family Foundation | Dubuque | $250 | 31 | $128K |
| The Hall-Perrine Foundation | Cedar Rapids | $150,000 | 30 | $22.6M |
| Leonard a Good Testamentary Trust | Ogden | $10,000 | 29 | $2.5M |
| The Kimball International - Habig | Muscatine | $500 | 28 | $894K |
| Weiler Foundation | Knoxville | $4,500 | 27 | $4.3M |
| The David & Phyllis Murphy | Mason City | $9,000 | 27 | $1.7M |
| Beth E Reinhart Charitable Trust | Mason City | $2,500 | 27 | $787K |
| Stanley Consultants Charitable Foundation | Muscatine | $5,972 | 26 | $625K |
| Warren Htimmerman Charitable Trust | Carroll | $7,000 | 25 | $603K |
| Dwight and Marilyn Conover Foundation | Okoboji | $10,000 | 25 | $2.0M |
| Grant & Virginia Brissman | Bettendorf | $5,000 | 25 | $685K |
| The Miccio Foundation | Iowa City | $3,000 | 25 | $274K |
| Kinney-Lindstrom Foundation Inc | Mason City | $6,000 | 25 | $2.8M |
| Carleen and Eugene Grandon | Cedar Rapids | $50,000 | 22 | $5.3M |
| Iowa Realty Foundation | West Des Moines | $2,000 | 22 | $423K |
| Ncmic Foundation Inc | Clive | $20,000 | 22 | $3.8M |
| Iowa State Bank Charitable Foundation | Sac City | $600 | 21 | $185K |
| Molinaro Family Charitable Foundation | Waterloo | $5,000 | 21 | $712K |
| Iowa Lakes Electric Members | Estherville | $2,500 | 21 | $191K |
| Berenstein Family Foundation | Sioux City | $500 | 20 | $68K |
| South Story Bank Charitable Foundation | Huxley | $1,000 | 20 | $139K |
| Mark & Kathy Larson Foundation | West Des Moines | $500 | 19 | $120K |
| Schiller Family Foundation | Newton | $1,800 | 19 | $599K |
| Charles and Karen Farver Charitable | Pella | $2,500 | 19 | $296K |
| Dorothy Ann Weitzel and Thomas F W | Clear Lake | $9,863 | 19 | $879K |
| Daniel J & Ann L Krumm Charitable Trus | Ames | $5,000 | 18 | $954K |
| Demco Charitable Foundation | Boyden | $2,500 | 18 | $800K |
| Audubon State Bank Charitable Foundation | Audubon | $475 | 18 | $203K |
| Woodward Foundation Inc | Dubuque | $5,000 | 18 | $366K |
| Allison Everett Pearson Foundation | Clinton | $2,000 | 18 | $242K |
| Molony Foundation | Bernard | $2,500 | 18 | $406K |
| Bob & Lamee Holscher Charitable Nka | Dubuque | $3,000 | 17 | $791K |
| William M & Donna J Hoaglin Foundat | Mt Pleasant | $6,000 | 17 | $463K |
| Mark & Kay Decook Charitable Founda | Pella | $2,000 | 17 | $299K |
| Herrig Charitable Foundation | Dubuque | $1,000 | 16 | $128K |
| John H & Ann Ghrist Family Foundation | Des Moines | $2,000 | 15 | $138K |
| The Vredenburg Foundation | Chariton | $10,000 | 15 | $1.3M |
| K2 Charitable Foundation | Urbandale | $10,000 | 15 | $5.0M |
| Roswell and Elizabeth Garst Foundation | Carroll | $3,000 | 14 | $348K |
| Rasheed Family Foundation | Clinton | $2,000 | 14 | $456K |
| Grace Bott Millar Charitable Trust | Keokuk | $5,000 | 14 | $250K |
| W Gerard & Colleen a Huiskamp | Davenport | $500 | 14 | $377K |
| First Security Foundation | Charles City | $10,000 | 14 | $379K |
| Fnnb Foundation | Newton | $1,000 | 14 | $65K |
| Walden Charitable Foundation | Arnolds Park | $5,000 | 14 | $376K |
| Ohnward Foundation | Maquoketa | $5,000 | 13 | $361K |
| Albert Victor Ravenholt Fund | Hanlontown | $18,500 | 13 | $1.9M |
| Wolf Foundation | West Des Moines | $2,118 | 12 | $195K |
| The Ralph & Sylvia G Green Charita | Des Moines | $5,000 | 12 | $221K |
| A M & Helen L Saylor Foundation | Hampton | $3,250 | 12 | $330K |
| J Ralph and Gladys Meier | Cedar Rapids | $735 | 12 | $32K |
| Wapello County Foundation | Ottumwa | $3,500 | 11 | $312K |
| Mansfield Charitable Foundation | Tama | $10,000 | 11 | $3.0M |
| Olberg Family Charitable Trust | Marion | $500 | 11 | $65K |
| Lee Endowment Foundation | Mason City | $348 | 10 | $59K |
| Mcleod Charitable Foundation Inc | Marion | $5,000 | 10 | $271K |
| George Paul and Grace E Lowrey | Boone | $3,000 | 10 | $169K |