New Effington Post Office
211 Main St, New Effington, SD 57255
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 | 8:15 AM - 10:00 AM |
Contact Info
| Phone | 605-637-5392 |
| Fax | 605-357-4906 |
| TTY | 877-889-2457 |
| Toll Free | 1-800-275-8777 (1-800-Ask-USPS®) |
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