ZIP code 98601 is officially located in the state of Washington, primarily serving the city of Amboy. It falls under the administrative jurisdiction of Clark County. When planning mail delivery, logistics routing, or demographic research, 98601 operates within the Pacific Time (PT) timezone and supports the 398 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98601 ZIP Code Tabulation Area is approximately 38,198. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $57,601.