ZIP code 95504 is officially located in the state of California, primarily serving the city of Eureka. It falls under the administrative jurisdiction of Humboldt County. When planning mail delivery, logistics routing, or demographic research, 95504 operates within the Pacific Time (PT) timezone and supports the 301 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 95504 ZIP Code Tabulation Area is approximately Data Not Available. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $108,504.