Piatt County ZIP Codes
Illinois, United States · 10 codes
Piatt County in Illinois has 10 ZIP codes, from 61813 to 61936, serving 10 places.
ZIP codes in Piatt
Frequently asked questions
What is the ZIP code of Piatt?
Piatt has 10 ZIP codes, from 61813 to 61936. The table lists the places each one serves.
How many places are listed in Piatt 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.