ZIP code 61234 is officially located in the state of Illinois, primarily serving the city of Annawan. It falls under the administrative jurisdiction of Henry County. When planning mail delivery, logistics routing, or demographic research, 61234 operates within the Central Time (CT) timezone and supports the 671 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61234 ZIP Code Tabulation Area is approximately 30,071. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $118,234.