ZIP code 92377 is officially located in the state of California, primarily serving the city of Rialto. It falls under the administrative jurisdiction of San Bernardino County. When planning mail delivery, logistics routing, or demographic research, 92377 operates within the Pacific Time (PT) timezone and supports the 770 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 92377 ZIP Code Tabulation Area is approximately 13,370. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $49,377.