ZIP code 98198 is officially located in the state of Washington, primarily serving the city of Des moines. It falls under the administrative jurisdiction of King County. When planning mail delivery, logistics routing, or demographic research, 98198 operates within the Pacific Time (PT) timezone and supports the 556 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98198 ZIP Code Tabulation Area is approximately 10,356. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $106,198.