ZIP code 61057 is officially located in the state of Illinois, primarily serving the city of Nachusa. It falls under the administrative jurisdiction of Lee County. When planning mail delivery, logistics routing, or demographic research, 61057 operates within the Central Time (CT) timezone and supports the 599 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61057 ZIP Code Tabulation Area is approximately 22,999. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $109,057.