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
Population
City
6364029,073Farmington
6360116,424Park Hills
6362815,312Bonne Terre
636243,678Bismarck
636531,353Leadwood
630361,352French Village
630871,140Valles Mines
63637859Doe Run

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