ZIP code · Castleford · Idaho · United States
ZIP code 83321 — Castleford
ZIP code 83321 serves Castleford, Idaho.
- Postal code
- 83321Single source Value from one source, not cross-checked.
- City
- Castleford
- County
- Twin Falls
- State
- Idaho
- Country
- United States
- Coordinates
- 42.5210, -114.8734 — precision precise (locality)
View on OpenStreetMap - Population
- 424 (ZCTA, ACS 5-year)
- Median household income
- $54,861
- Median age
- 40.6
- Time zone
- America/Boise (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