ZIP code 61285 is officially located in the state of Illinois, primarily serving the city of Thomson. It falls under the administrative jurisdiction of Carroll County. When planning mail delivery, logistics routing, or demographic research, 61285 operates within the Central Time (CT) timezone and supports the 645 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61285 ZIP Code Tabulation Area is approximately 18,845. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $85,285.