ZIP code 63640 is officially located in the state of Missouri, primarily serving the city of Farmington. It falls under the administrative jurisdiction of St. Francois County. When planning mail delivery, logistics routing, or demographic research, 63640 operates within the Central Time (CT) timezone and supports the 725 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 63640 ZIP Code Tabulation Area is approximately 37,125. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,640.