Saint Charles County ZIP Codes
Missouri, United States · 17 codes
Saint Charles County in Missouri has 17 ZIP codes, from 63301 to 63386, serving 17 places.
ZIP codes in Saint Charles
Frequently asked questions
What is the ZIP code of Saint Charles?
Saint Charles has 17 ZIP codes, from 63301 to 63386. The table lists the places each one serves.
How many places are listed in Saint Charles County?
17 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.