ZIP code 98584 is officially located in the state of Washington, primarily serving the city of Shelton. It falls under the administrative jurisdiction of Mason County. When planning mail delivery, logistics routing, or demographic research, 98584 operates within the Pacific Time (PT) timezone and supports the 239 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98584 ZIP Code Tabulation Area is approximately 11,439. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $68,584.