Johnson County ZIP Codes
Iowa, United States · 14 codes
Johnson County in Iowa has 14 ZIP codes, from 52235 to 52755, serving 14 places.
ZIP codes in Johnson
Frequently asked questions
What is the ZIP code of Johnson?
Johnson has 14 ZIP codes, from 52235 to 52755. The table lists the places each one serves.
How many places are listed in Johnson 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.