Fairfax Post Office
412 Main St, Fairfax, SD 57335
Retail Hours
| Sunday | Closed |
| Monday | 8:00 AM - 12:00 PM |
| Tuesday | 8:00 AM - 12:00 PM |
| Wednesday | 8:00 AM - 12:00 PM |
| Thursday | 8:00 AM - 12:00 PM |
| Friday | 8:00 AM - 12:00 PM |
| Saturday | 8:30 AM - 10:30 AM |
Contact Info
| Phone | 605-654-2243 |
| Fax | 605-357-4906 |
| TTY | 877-889-2457 |
| Toll Free | 1-800-275-8777 (1-800-Ask-USPS®) |
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