ZIP code 57770 is officially located in the state of South dakota, primarily serving the city of Pine ridge. It falls under the administrative jurisdiction of Shannon County. When planning mail delivery, logistics routing, or demographic research, 57770 operates within the Mountain Time (MT) timezone and supports the 277 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57770 ZIP Code Tabulation Area is approximately 25,477. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $130,770.