ZIP code · Whitehorse · South Dakota · United States
ZIP code 57661 — Whitehorse
ZIP code 57661 serves Whitehorse, South Dakota.
- Postal code
- 57661Single source Value from one source, not cross-checked.
- City
- Whitehorse
- County
- Dewey
- State
- South Dakota
- Country
- United States
- Coordinates
- 45.2705, -100.8865 — precision precise (locality)
View on OpenStreetMap - Population
- 152 (ZCTA, ACS 5-year)
- Median household income
- $56,250
- Median age
- 29.8
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 605 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Nearby localities
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page