ZIP code 91917 is officially located in the state of California, primarily serving the city of Dulzura. It falls under the administrative jurisdiction of San Diego County. When planning mail delivery, logistics routing, or demographic research, 91917 operates within the Pacific Time (PT) timezone and supports the 618 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 91917 ZIP Code Tabulation Area is approximately 31,418. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $129,917.