ZIP code 61840 is officially located in the state of Illinois, primarily serving the city of Dewey. It falls under the administrative jurisdiction of Champaign County. When planning mail delivery, logistics routing, or demographic research, 61840 operates within the Central Time (CT) timezone and supports the 819 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61840 ZIP Code Tabulation Area is approximately 17,619. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,840.