Clayton County ZIP Codes
Iowa, United States · 15 codes
Clayton County in Iowa has 15 ZIP codes, from 52042 to 52159, serving 15 places.
ZIP codes in Clayton
Frequently asked questions
What is the ZIP code of Clayton?
Clayton has 15 ZIP codes, from 52042 to 52159. The table lists the places each one serves.
How many places are listed in Clayton County?
15 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.