There are 8 zip codes in St. Francois County, Missouri. The most populated is 63640, located in Farmington. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
63640Farmington29,073
63601Park Hills16,424
63628Bonne Terre15,312
63624Bismarck3,678
63653Leadwood1,353
63036French Village1,352
63087Valles Mines1,140
63637Doe Run859

St. Francois County, Missouri Zip Codes by Population (2024)