ZIP code 62539 is officially located in the state of Illinois, primarily serving the city of Illiopolis. It falls under the administrative jurisdiction of Sangamon County. When planning mail delivery, logistics routing, or demographic research, 62539 operates within the Central Time (CT) timezone and supports the 504 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62539 ZIP Code Tabulation Area is approximately 40,404. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $103,539.