St. Charles County ZIP Codes
Louisiana, United States · 10 codes
St. Charles County in Louisiana has 10 ZIP codes, from 70030 to 70087, serving 10 places.
ZIP codes in St. Charles
Frequently asked questions
What is the ZIP code of St. Charles?
St. Charles has 10 ZIP codes, from 70030 to 70087. The table lists the places each one serves.
How many places are listed in St. Charles 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.