ZIP code 53901 is officially located in the state of Wisconsin, primarily serving the city of Portage. It falls under the administrative jurisdiction of Columbia County. When planning mail delivery, logistics routing, or demographic research, 53901 operates within the Central Time (CT) timezone and supports the 552 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 53901 ZIP Code Tabulation Area is approximately 15,252. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $57,901.