ZIP code 99335 is officially located in the state of Washington, primarily serving the city of Kahlotus. It falls under the administrative jurisdiction of Franklin County. When planning mail delivery, logistics routing, or demographic research, 99335 operates within the Pacific Time (PT) timezone and supports the 639 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 99335 ZIP Code Tabulation Area is approximately 34,239. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $135,335.