ZIP code · Glencross · South Dakota · United States
ZIP code 57630 — Glencross
ZIP code 57630 serves Glencross, South Dakota.
- Postal code
- 57630Single source Value from one source, not cross-checked.
- City
- Glencross
- County
- Dewey
- State
- South Dakota
- Country
- United States
- Coordinates
- 45.4483, -100.9213 — precision precise (locality)
View on OpenStreetMap - Population
- 21 (ZCTA, ACS 5-year)
- Median household income
- $197,500
- Median age
- 55.4
- Time zone
- America/Denver (UTC−7 / UTC−6 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