ZIP code 60431 is officially located in the state of Illinois, primarily serving the city of Joliet. It falls under the administrative jurisdiction of Will County. When planning mail delivery, logistics routing, or demographic research, 60431 operates within the Central Time (CT) timezone and supports the 591 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60431 ZIP Code Tabulation Area is approximately 11,091. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,431.