ZIP code · Oldham · South Dakota · United States
ZIP code 57051 — Oldham
ZIP code 57051 serves Oldham, South Dakota.
- Postal code
- 57051Single source Value from one source, not cross-checked.
- City
- Oldham
- County
- Kingsbury
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.2457, -97.2696 — precision precise (locality)
View on OpenStreetMap - Population
- 181 (ZCTA, ACS 5-year)
- Median household income
- $46,250
- Median age
- 60
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
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