ZIP code 99118 is officially located in the state of Washington, primarily serving the city of Curlew. It falls under the administrative jurisdiction of Ferry County. When planning mail delivery, logistics routing, or demographic research, 99118 operates within the Pacific Time (PT) timezone and supports the 259 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 99118 ZIP Code Tabulation Area is approximately 31,059. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $46,118.