ZIP code 60045 is officially located in the state of Illinois, primarily serving the city of Lake forest. It falls under the administrative jurisdiction of Lake County. When planning mail delivery, logistics routing, or demographic research, 60045 operates within the Central Time (CT) timezone and supports the 840 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60045 ZIP Code Tabulation Area is approximately 16,940. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $105,045.