ZIP code 98237 is officially located in the state of Washington, primarily serving the city of Concrete. It falls under the administrative jurisdiction of Skagit County. When planning mail delivery, logistics routing, or demographic research, 98237 operates within the Pacific Time (PT) timezone and supports the 602 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 98237 ZIP Code Tabulation Area is approximately 39,102. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,237.