ZIP code 95638 is officially located in the state of California, primarily serving the city of Herald. It falls under the administrative jurisdiction of Sacramento County. When planning mail delivery, logistics routing, or demographic research, 95638 operates within the Pacific Time (PT) timezone and supports the 478 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 95638 ZIP Code Tabulation Area is approximately 7,478. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $86,638.