ZIP code 91910 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, 91910 operates within the Pacific Time (PT) timezone and supports the 800 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 91910 ZIP Code Tabulation Area is approximately 3,600. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $110,910.