ZIP code 57021 is officially located in the state of South dakota, primarily serving the city of Davis. It falls under the administrative jurisdiction of Turner County. When planning mail delivery, logistics routing, or demographic research, 57021 operates within the Central Time (CT) timezone and supports the 307 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57021 ZIP Code Tabulation Area is approximately 34,607. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,021.