Post offices in the 57720 ZIP code of Buffalo, SD

The ZIP code 57720, situated in Buffalo, SD, includes 1 post office within the city of Buffalo. The listed operating hours indicate when retail services are available, providing a time when postal employees are available to assist customers. Often, the lobby areas remain open longer, granting access to PO boxes, package drop-off areas, and self-service Automated Postal Center (APC) machines for stamp purchases.The compilation is sorted first by city and then by the name of the post office, with Street View pictures of the post offices included whenever possible. Please contact us if you find an error, so that we can correct it.

Street View Image of Buffalo Post Office in Buffalo, SD

Buffalo Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
109 1st St W Buffalo, SD 57720-9998

Get directions

Open hours
Day Open Close
Monday 8:30 AM 1:30 PM
2:30 PM 5:00 PM
Tuesday 8:30 AM 1:30 PM
2:30 PM 5:00 PM
Wednesday 8:30 AM 1:30 PM
2:30 PM 5:00 PM
Thursday 8:30 AM 1:30 PM
2:30 PM 5:00 PM
Friday 8:30 AM 1:30 PM
2:30 PM 5:00 PM
Saturday 10:45 AM 11:45 AM
Sunday Closed
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value