Stephenson County ZIP Codes
Illinois, United States · 14 codes
Stephenson County in Illinois has 14 ZIP codes, from 61013 to 61089, serving 14 places.
ZIP codes in Stephenson
Frequently asked questions
What is the ZIP code of Stephenson?
Stephenson has 14 ZIP codes, from 61013 to 61089. The table lists the places each one serves.
How many places are listed in Stephenson County?
14 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.