St. Clair County ZIP Codes
Missouri, United States · 5 codes
St. Clair County in Missouri has 5 ZIP codes, from 64724 to 64781, serving 5 places.
ZIP codes in St. Clair
Frequently asked questions
What is the ZIP code of St. Clair?
St. Clair has 5 ZIP codes, from 64724 to 64781. The table lists the places each one serves.
How many places are listed in St. Clair County?
5 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.