Johnson County ZIP Codes
Illinois, United States · 10 codes
Johnson County in Illinois has 10 ZIP codes, from 62908 to 62995, serving 10 places.
ZIP codes in Johnson
Frequently asked questions
What is the ZIP code of Johnson?
Johnson has 10 ZIP codes, from 62908 to 62995. The table lists the places each one serves.
How many places are listed in Johnson County?
10 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.