Jefferson County ZIP Codes
Idaho, United States · 8 codes
Jefferson County in Idaho has 8 ZIP codes, from 83425 to 83450, serving 8 places.
ZIP codes in Jefferson
Frequently asked questions
What is the ZIP code of Jefferson?
Jefferson has 8 ZIP codes, from 83425 to 83450. The table lists the places each one serves.
How many places are listed in Jefferson 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.