| Name | City | County | Phone |
|---|---|---|---|
| 218 Grain, LLC | Crawfordsville | Washington | 319-400-8384 |
| 21st Century Cooperative | Cumberland | Cass | 712-774-5412 |
| A & K Feed & Grain Co., Inc. | Lime Springs | Howard | 563-566-2291 |
| ADM Corn Processing | Cedar Rapids | Linn | 319-442-3228 |
| ADM Grain Company | Burlington | Des Moines | 319-442-3228 |
| ADM Grain Company | Clinton | Clinton | 563-242-5251 |
| ADM Processing | Des Moines | Polk | 515-263-3280 |
| Agri-Center of Henry County, Inc. | Mount Pleasant | Henry | 319-385-2548 |
| Agri-Way Partners, L.L.C. | Wayland | Henry | 319-256-6000 |
| Agriland FS, Inc. | Oskaloosa | Mahaska | 712-542-2146 |
| Agro.Club USA LLC | Kansas City | out-of-state | 212-300-5182 |
| AgState | Marathon | Buena Vista | 712-225-5400 |
| All Star Trading Inc. | Schaumburg | out-of-state | 847-375-8675 |
| Amana Farms, Inc. | Homestead | Iowa | 319-622-3791 |
| Andover Grain & Fertilizer, Inc. | Andover | Clinton | 563-682-7599 |
| Archer Cooperative Grain Company | Archer | O'Brien | 712-723-5233 |
| Art's Milling Service, Inc. | Protivin | Howard | 563-569-8386 |
| Aspinwall Cooperative Co. | Aspinwall | Crawford | 712-653-3441 |
| Aurora Elevator, Inc. | Aurora | Buchanan | 319-634-3330 |
| Bartlett Grain Company, L.P. | Hamburg | Fremont | 712-382-1238 |
| Bartlett Grain Company, L.P. | Council Bluffs | Pottawattamie | 712-322-3444 |
| Bennett Grain LLC | Bennett | Cedar | 563-893-2425 |
| Benson Hill Holdings, Inc. | St. Louis | out-of-state | 314-222-8218 |
| Benton Grain Company, L.L.C. | Keystone | Benton | 319-442-3231 |
| Bieri Grain LLC | Letts | Louisa | 319-726-3791 |
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