ZIP code 54603 is officially located in the state of Wisconsin, primarily serving the city of La crosse. It falls under the administrative jurisdiction of La Crosse County. When planning mail delivery, logistics routing, or demographic research, 54603 operates within the Central Time (CT) timezone and supports the 771 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 54603 ZIP Code Tabulation Area is approximately 9,871. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $91,603.