ZIP code 83854 is officially located in the state of Idaho, primarily serving the city of Post falls. It falls under the administrative jurisdiction of Kootenai County. When planning mail delivery, logistics routing, or demographic research, 83854 operates within the Pacific Time (PT) timezone and supports the 587 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 83854 ZIP Code Tabulation Area is approximately 15,987. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $58,854.