ZIP code 98537 is officially located in the state of Washington, primarily serving the city of Cosmopolis. It falls under the administrative jurisdiction of Grays Harbor County. When planning mail delivery, logistics routing, or demographic research, 98537 operates within the Pacific Time (PT) timezone and supports the 848 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98537 ZIP Code Tabulation Area is approximately 18,348. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,537.