ZIP code 54234 is officially located in the state of Wisconsin, primarily serving the city of Sister bay. It falls under the administrative jurisdiction of Door County. When planning mail delivery, logistics routing, or demographic research, 54234 operates within the Central Time (CT) timezone and supports the 631 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 54234 ZIP Code Tabulation Area is approximately 3,431. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $118,234.