| Pella Rolscreen Foundation | Pella | $1,000 | 650 | $7.9M |
| Meredith Corporation Foundation | Des Moines | $255 | 271 | $4.1M |
| Emc Insurance Foundation | Des Moines | $5,000 | 170 | $7.8M |
| Lsb Foundation | Reinbeck | $1,000 | 151 | $972K |
| The West Bancorporation Foundation Inc | West Des Moines | $2,500 | 134 | $1.4M |
| Noonmark Foundation | Mount Vernon | $100 | 126 | $55K |
| Iowa West Foundation | Council Bluffs | $37,500 | 112 | $64.1M |
| Max and Helen Guernsey | Cedar Falls | $18,000 | 108 | $7.9M |
| Greenstate Foundation | North Liberty | $10,000 | 98 | $1.9M |
| First Citizens Bank Charitable | Mason City | $3,000 | 96 | $2.1M |
| New Charitable Foundation | Fort Dodge | $500 | 95 | $968K |
| The Wellmark Foundation | Des Moines | $50,000 | 93 | $14.8M |
| Athene Charitable Foundation | West Des Moines | $2,000 | 90 | $10.1M |
| The Seidler Foundation | Des Moines | $5,000 | 86 | $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 |
| Roy J Carver Charitable Trust | Muscatine | $80,000 | 82 | $73.4M |
| Interstates Foundation | Sioux Center | $1,500 | 80 | $998K |
| John K and Luise V Hanson Foundation | Forest City | $9,500 | 78 | $17.0M |
| Change Happens Foundation | Urbandale | $10,000 | 77 | $2.6M |
| Hni Charitable Foundation | Muscatine | $1,000 | 73 | $4.1M |
| Weiler Foundation | Knoxville | $1,000 | 71 | $5.7M |
| Dupaco Rw Hoefer Foundation | Dubuque | $5,000 | 71 | $873K |
| Todd and Mary Heistand Family | Woodbine | $20,000 | 69 | $7.0M |
| Mid-Iowa Health Foundation | Des Moines | $2,500 | 66 | $2.5M |
| Tomson Family Foundation Trust | Mason City | $3,500 | 65 | $5.2M |
| Otto Schoitz Foundation | Waterloo | $25,000 | 65 | $16.6M |
| Berkshire Hathaway Energy Foundation | Des Moines | $22,500 | 63 | $15.6M |
| Grinnell Mutual Group Foundation | Grinnell | $1,500 | 62 | $1.0M |
| Esp International Charitable Foundation | Cedar Rapids | $375 | 61 | $170K |
| The Goldstein Family Foundation | Bettendorf | $5,000 | 59 | $3.1M |
| Violet G Young Charitable Trust | Des Moines | $1,000 | 58 | $391K |
| James B & Melita a Mcdonough | Dubuque | $3,500 | 57 | $1.0M |
| John Ruan Foundation Trust | Urbandale | $10,000 | 54 | $17.7M |
| Iowa Savings Bank Charitable Foundation | Carroll | $250 | 52 | $314K |
| Farrer Endowment Foundation | Mason City | $5,000 | 49 | $1.6M |
| Gartner Family Foundation | Des Moines | $10,000 | 45 | $2.3M |
| Jd Nelson and Debra Nelson | Clear Lake | $8,000 | 44 | $1.3M |
| R J Mcelroy Trust | Waterloo | $10,000 | 42 | $4.5M |
| Martin D & Barbara H Rich Family | Davenport | $1,150 | 41 | $621K |
| Home State Bank Charitable Foundation | Jefferson | $1,000 | 41 | $440K |
| Henry Family Foundation | Dubuque | $2,500 | 40 | $874K |
| Daniels Family Foundation Fka the | West Des Moines | $1,800 | 39 | $987K |
| John P & Lawrence J Giacoletto Fnd | Marion | $8,000 | 38 | $1.5M |
| Bsl Foundation | Grimes | $1,000 | 37 | $301K |
| Martha Ellen Tye Foundation | Marshalltown | $5,500 | 37 | $4.3M |
| Charlotte and William Hinson | West Des Moines | $1,000 | 37 | $304K |
| Schwartz Family Foundation | Fairfield | $25,000 | 36 | $11.1M |
| Grant & Virginia Brissman | Bettendorf | $5,000 | 35 | $871K |
| The Hall-Perrine Foundation | Cedar Rapids | $166,666 | 33 | $28.2M |
| Stanley Consultants Charitable Foundation | Muscatine | $5,200 | 32 | $767K |
| Sirk Family Foundation | Dubuque | $250 | 31 | $128K |
| The Miccio Foundation | Iowa City | $3,106 | 31 | $355K |
| Warren Htimmerman Charitable Trust | Carroll | $6,130 | 30 | $766K |
| Leonard a Good Testamentary Trust | Ogden | $10,500 | 30 | $3.0M |
| Kinney-Lindstrom Foundation Inc | Mason City | $6,480 | 29 | $3.6M |
| Iowa Lakes Electric Members | Estherville | $3,000 | 29 | $265K |
| Dwight and Marilyn Conover Foundation | Okoboji | $10,000 | 28 | $2.4M |
| The Kimball International - Habig | Muscatine | $500 | 28 | $894K |
| The David & Phyllis Murphy | Mason City | $9,000 | 27 | $1.7M |
| Beth E Reinhart Charitable Trust | Mason City | $2,500 | 27 | $787K |
| Carleen and Eugene Grandon | Cedar Rapids | $50,000 | 26 | $6.8M |
| Ncmic Foundation Inc | Clive | $20,000 | 26 | $4.9M |
| South Story Bank Charitable Foundation | Huxley | $1,000 | 26 | $184K |
| William M & Donna J Hoaglin | Mt Pleasant | $6,000 | 25 | $688K |
| Berenstein Family Foundation | Sioux City | $500 | 23 | $85K |
| Iowa Realty Foundation | West Des Moines | $2,000 | 22 | $423K |
| Dorothy Ann Weitzel and Thomas F W | Clear Lake | $9,863 | 22 | $1.4M |
| Iowa State Bank Charitable Foundation | Sac City | $600 | 21 | $249K |
| Molinaro Family Charitable Foundation | Waterloo | $5,000 | 21 | $712K |
| Woodward Foundation Inc | Dubuque | $5,000 | 21 | $461K |
| Mark & Kathy Larson Foundation | West Des Moines | $500 | 20 | $120K |
| Audubon State Bank Charitable Foundation | Audubon | $500 | 20 | $249K |
| Allison Everett Pearson Foundation | Clinton | $2,000 | 20 | $301K |
| Herrig Charitable Foundation | Dubuque | $1,000 | 20 | $158K |
| Molony Foundation | Bernard | $2,500 | 20 | $536K |
| Daniel J & Ann L Krumm Charitable Trus | Ames | $5,000 | 19 | $1.2M |
| K2 Charitable Foundation | Urbandale | $10,000 | 19 | $7.1M |
| Charles and Karen Farver Charitable | Pella | $2,500 | 19 | $341K |
| Demco Charitable Foundation | Boyden | $2,500 | 18 | $800K |
| Schiller Family Foundation | Newton | $1,800 | 18 | $599K |
| The Vredenburg Foundation | Chariton | $10,000 | 18 | $1.6M |
| Rasheed Family Foundation | Clinton | $2,000 | 18 | $578K |
| Bob & Lamee Holscher Charitable Nka | Dubuque | $3,000 | 17 | $992K |
| Fnnb Foundation | Newton | $1,200 | 17 | $91K |
| Albert Victor Ravenholt Fund | Hanlontown | $16,500 | 17 | $2.4M |
| Roswell and Elizabeth Garst Foundation | Sac City | $3,000 | 16 | $441K |
| Mark & Kay Decook Charitable Founda | Pella | $2,000 | 16 | $299K |
| First Security Foundation | Charles City | $10,000 | 16 | $459K |
| Ohnward Foundation | Maquoketa | $5,000 | 15 | $501K |
| John H & Ann Ghrist Family Foundation | Des Moines | $2,000 | 15 | $138K |
| A M & Helen L Saylor Foundation | Hampton | $3,500 | 15 | $373K |
| Wapello County Foundation | Ottumwa | $3,500 | 14 | $388K |
| Grace Bott Millar Charitable Trust | Keokuk | $5,000 | 14 | $282K |
| W Gerard & Colleen a Huiskamp | Davenport | $600 | 14 | $490K |
| George Paul and Grace E Lowrey | Boone | $3,000 | 14 | $210K |
| Walden Charitable Foundation | Arnolds Park | $5,000 | 14 | $559K |
| Willard E and Ella P Thompson | Algona | $9,104 | 13 | $1.2M |
| The Ralph & Sylvia G Green Charita | Des Moines | $5,000 | 12 | $221K |
| Mansfield Charitable Foundation | Tama | $10,000 | 12 | $3.0M |
| Norman I & Sandra Rich Family Charitable | Davenport | $4,750 | 11 | $159K |
| Wolf Foundation | West Des Moines | $2,118 | 11 | $195K |
| Olberg Family Charitable Trust | Marion | $500 | 11 | $65K |
| J Ralph and Gladys Meier | Cedar Rapids | $720 | 11 | $37K |
| Wright Service Corp Foundation | West Des Moines | $25,000 | 11 | $793K |
| St Paul Lutheran Church Mission Endowment | Lime Springs | $2,000 | 11 | $118K |
| Charles J and Marjorie Schrup JR Family | Dubuque | $12,500 | 10 | $944K |
| Hartig Charitable Foundation 1015003512 | Dubuque | $1,000 | 10 | $461K |
| Mcleod Charitable Foundation Inc | Marion | $5,000 | 10 | $425K |
| Brouwer Family Foundation | Oskaloosa | $10,000 | 10 | $368K |