ZIP code 98943 is officially located in the state of Washington, primarily serving the city of South cle elum. It falls under the administrative jurisdiction of Kittitas County. When planning mail delivery, logistics routing, or demographic research, 98943 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 98943 ZIP Code Tabulation Area is approximately 23,339. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $71,943.