ZIP code 54020 is officially located in the state of Wisconsin, primarily serving the city of Osceola. It falls under the administrative jurisdiction of Polk County. When planning mail delivery, logistics routing, or demographic research, 54020 operates within the Central Time (CT) timezone and supports the 309 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 54020 ZIP Code Tabulation Area is approximately 29,709. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,020.