Brown County ZIP Codes
South Dakota, United States · 14 codes
Brown County in South Dakota has 14 ZIP codes, from 57401 to 57481, serving 14 places.
ZIP codes in Brown
Frequently asked questions
What is the ZIP code of Brown?
Brown has 14 ZIP codes, from 57401 to 57481. The table lists the places each one serves.
How many places are listed in Brown County?
14 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.