ZIP code 60091 is officially located in the state of Illinois, primarily serving the city of Wilmette. It falls under the administrative jurisdiction of Cook County. When planning mail delivery, logistics routing, or demographic research, 60091 operates within the Central Time (CT) timezone and supports the 370 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60091 ZIP Code Tabulation Area is approximately 32,570. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $87,091.