Saint Charles, MO zip codes
Saint Charles, Missouri has 4 zip codes (3 residential, 1 PO box or single-organization). Most of it is in St. Charles County. Together these zip codes are home to about 142K people.
Zip codes
4
Population
142K
All zips combined
Largest zip
63301
52,667 residents
Income range
$85K–$114K
Median by zip