Fremont County ZIP Codes
Idaho, United States · 8 codes
Fremont County in Idaho has 8 ZIP codes, from 83420 to 83451, serving 8 places.
ZIP codes in Fremont
Frequently asked questions
What is the ZIP code of Fremont?
Fremont has 8 ZIP codes, from 83420 to 83451. The table lists the places each one serves.
How many places are listed in Fremont County?
8 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.