ZIP code 54479 is officially located in the state of Wisconsin, primarily serving the city of Spencer. It falls under the administrative jurisdiction of Marathon County. When planning mail delivery, logistics routing, or demographic research, 54479 operates within the Central Time (CT) timezone and supports the 396 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 54479 ZIP Code Tabulation Area is approximately 26,296. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $83,479.