ZIP code 91911 is officially located in the state of California, primarily serving the city of Chula vista. It falls under the administrative jurisdiction of San Diego County. When planning mail delivery, logistics routing, or demographic research, 91911 operates within the Pacific Time (PT) timezone and supports the 680 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 91911 ZIP Code Tabulation Area is approximately 41,980. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $127,911.