| Business | Phone |
| Deering Brothers 11226 Highway 18, Postville 52162 | (563) 864-7331 |
| Hartley Construction Postville 52162 | (563) 864-7344 |
| Postville Diversity Council 211 S Ogden, Postville 52162 | (563) 864-7705 |
| Paul's Place 411 S Lawler St, Postville 52162 | (563) 864-3524 |
| Swinetek 12645 Highway 18, Postville 52162 | (563) 864-7633 |
| Prairie Feeder Pig Inc 10469 130th St, Postville 52162 | (563) 864-7120 |
| Deering Brothers No 3 Route, Postville 52162 | (563) 864-7330 |
| Hurdal Inc 12256 120th St, Postville 52162 | (563) 864-7587 |
| Good Samaritan Ctr Hospital Rd, Postville 52162 | (563) 864-7427 |
| Malcom Enterprises Inc Po Box 103, Postville 52162 | (563) 864-3905 |
| Silos & Smokestacks 134 W Greene, Postville 52162 | (563) 864-7527 |