Buffalo County ZIP Codes
South Dakota, United States · 2 codes
Buffalo County in South Dakota has 2 ZIP codes, from 57339 to 57341, serving 2 places.
ZIP codes in Buffalo
Frequently asked questions
What is the ZIP code of Buffalo?
Buffalo has 2 ZIP codes, from 57339 to 57341. The table lists the places each one serves.
How many places are listed in Buffalo County?
2 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.