ZIP code 53503 is officially located in the state of Wisconsin, primarily serving the city of Arena. It falls under the administrative jurisdiction of Iowa County. When planning mail delivery, logistics routing, or demographic research, 53503 operates within the Central Time (CT) timezone and supports the 510 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 53503 ZIP Code Tabulation Area is approximately 20,810. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $91,503.