ZIP code 94595 is officially located in the state of California, primarily serving the city of Walnut creek. It falls under the administrative jurisdiction of Contra Costa County. When planning mail delivery, logistics routing, or demographic research, 94595 operates within the Pacific Time (PT) timezone and supports the 834 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 94595 ZIP Code Tabulation Area is approximately 26,734. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $55,595.