ZIP code 98355 is officially located in the state of Washington, primarily serving the city of Mineral. It falls under the administrative jurisdiction of Lewis County. When planning mail delivery, logistics routing, or demographic research, 98355 operates within the Pacific Time (PT) timezone and supports the 671 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98355 ZIP Code Tabulation Area is approximately 34,971. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $75,355.