ZIP code 57634 is officially located in the state of South dakota, primarily serving the city of Keldron. It falls under the administrative jurisdiction of Corson County. When planning mail delivery, logistics routing, or demographic research, 57634 operates within the Central Time (CT) timezone and supports the 403 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57634 ZIP Code Tabulation Area is approximately 32,603. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $118,634.