ZIP code 57788 is officially located in the state of South dakota, primarily serving the city of Vale. It falls under the administrative jurisdiction of Butte County. When planning mail delivery, logistics routing, or demographic research, 57788 operates within the Mountain Time (MT) timezone and supports the 808 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57788 ZIP Code Tabulation Area is approximately 40,008. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $136,788.