ZIP code 63138 is officially located in the state of Missouri, primarily serving the city of North county. It falls under the administrative jurisdiction of St. Louis County. When planning mail delivery, logistics routing, or demographic research, 63138 operates within the Central Time (CT) timezone and supports the 504 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 63138 ZIP Code Tabulation Area is approximately 27,104. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $86,138.