ZIP code 93420 is officially located in the state of California, primarily serving the city of Halcyon. It falls under the administrative jurisdiction of San Luis Obispo County. When planning mail delivery, logistics routing, or demographic research, 93420 operates within the Pacific Time (PT) timezone and supports the 505 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 93420 ZIP Code Tabulation Area is approximately 29,905. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,420.