ZIP code 98684 is officially located in the state of Washington, primarily serving the city of Cascade park. It falls under the administrative jurisdiction of Clark County. When planning mail delivery, logistics routing, or demographic research, 98684 operates within the Pacific Time (PT) timezone and supports the 554 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98684 ZIP Code Tabulation Area is approximately 37,654. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $68,684.