Post office locations in 55057
| Post Office | Address | Phone | Hours |
| NORTHFIELD | 14 BRIDGE SQ NORTHFIELD, MN 55057 - 2008 | 507-645-7812 | Mon-Fri 09:00 AM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |
| NORTHFIELD CARRIER ANNEX | 2101 CANNON RD NORTHFIELD, MN 55057 - 3608 | 507-645-8127 |