ZIP code 61431 is officially located in the state of Illinois, primarily serving the city of Ellisville. It falls under the administrative jurisdiction of Fulton County. When planning mail delivery, logistics routing, or demographic research, 61431 operates within the Central Time (CT) timezone and supports the 559 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61431 ZIP Code Tabulation Area is approximately 9,659. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,431.