ZIP code 61328 is officially located in the state of Illinois, primarily serving the city of Kasbeer. It falls under the administrative jurisdiction of Bureau County. When planning mail delivery, logistics routing, or demographic research, 61328 operates within the Central Time (CT) timezone and supports the 664 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61328 ZIP Code Tabulation Area is approximately 18,864. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $116,328.