Saint Charles, MO ZIP Codes

Total ZIPs

134,684

Total Population

ZIP Codes in Saint Charles, MO

ZIP Code	Population	Density	Timezone
63301	48,514	212	America/Chicago
63303	45,834	893	America/Chicago
63304	40,336	372	America/Chicago

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.