ZIP code 57772 is officially located in the state of South dakota, primarily serving the city of Porcupine. It falls under the administrative jurisdiction of Shannon County. When planning mail delivery, logistics routing, or demographic research, 57772 operates within the Mountain Time (MT) timezone and supports the 596 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57772 ZIP Code Tabulation Area is approximately 18,796. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $64,772.