Custer County ZIP Codes
South Dakota, United States · 5 codes
Custer County in South Dakota has 5 ZIP codes, from 57722 to 57773, serving 5 places.
ZIP codes in Custer
Frequently asked questions
What is the ZIP code of Custer?
Custer has 5 ZIP codes, from 57722 to 57773. The table lists the places each one serves.
How many places are listed in Custer County?
5 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.