ZIP code 83857 is officially located in the state of Idaho, primarily serving the city of Princeton. It falls under the administrative jurisdiction of Latah County. When planning mail delivery, logistics routing, or demographic research, 83857 operates within the Pacific Time (PT) timezone and supports the 832 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 83857 ZIP Code Tabulation Area is approximately 35,832. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $109,857.