ZIP code 98256 is officially located in the state of Washington, primarily serving the city of Index. It falls under the administrative jurisdiction of Snohomish County. When planning mail delivery, logistics routing, or demographic research, 98256 operates within the Pacific Time (PT) timezone and supports the 777 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98256 ZIP Code Tabulation Area is approximately 21,777. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $92,256.