ZIP code 98564 is officially located in the state of Washington, primarily serving the city of Mossyrock. It falls under the administrative jurisdiction of Lewis County. When planning mail delivery, logistics routing, or demographic research, 98564 operates within the Pacific Time (PT) timezone and supports the 679 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98564 ZIP Code Tabulation Area is approximately 4,179. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $128,564.