Post Offices List in Adair County, Iowa:
| Adair Post Office | 317 Audubon St, Adair, IA 50002 |
| Bridgewater Post Office | 114 N Main St, Bridgewater, IA 50837 |
| Fontanelle Post Office | 407 Washington St, Fontanelle, IA 50846 |
| Greenfield Post Office | 119 Se Jackson St, Greenfield, IA 50849 |
| Orient Post Office | 122 N Broad St, Orient, IA 50858 |