ZIP code 53057 is officially located in the state of Wisconsin, primarily serving the city of Mount calvary. It falls under the administrative jurisdiction of Fond du Lac County. When planning mail delivery, logistics routing, or demographic research, 53057 operates within the Central Time (CT) timezone and supports the 214 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 53057 ZIP Code Tabulation Area is approximately 41,514. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $109,057.