Franklin County ZIP Codes
Illinois, United States · 16 codes
Franklin County in Illinois has 16 ZIP codes, from 62812 to 62999, serving 16 places.
ZIP codes in Franklin
Frequently asked questions
What is the ZIP code of Franklin?
Franklin has 16 ZIP codes, from 62812 to 62999. The table lists the places each one serves.
How many places are listed in Franklin County?
16 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.