ZIP code 54128 is officially located in the state of Wisconsin, primarily serving the city of Gresham. It falls under the administrative jurisdiction of Shawano County. When planning mail delivery, logistics routing, or demographic research, 54128 operates within the Central Time (CT) timezone and supports the 616 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 54128 ZIP Code Tabulation Area is approximately 15,316. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $116,128.