ZIP code 61323 is officially located in the state of Illinois, primarily serving the city of Dover. It falls under the administrative jurisdiction of Bureau County. When planning mail delivery, logistics routing, or demographic research, 61323 operates within the Central Time (CT) timezone and supports the 306 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61323 ZIP Code Tabulation Area is approximately 17,806. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $131,323.