ZIP code 57703 is officially located in the state of South dakota, primarily serving the city of Zcta 57703. It falls under the administrative jurisdiction of Pennington County. When planning mail delivery, logistics routing, or demographic research, 57703 operates within the Mountain Time (MT) timezone and supports the 657 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 57703 ZIP Code Tabulation Area is approximately 8,357. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $91,703.