ZIP code 63012 is officially located in the state of Missouri, primarily serving the city of Barnhart. It falls under the administrative jurisdiction of Jefferson County. When planning mail delivery, logistics routing, or demographic research, 63012 operates within the Central Time (CT) timezone and supports the 638 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 63012 ZIP Code Tabulation Area is approximately 3,438. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $44,012.