ZIP code 61329 is officially located in the state of Illinois, primarily serving the city of Ladd. It falls under the administrative jurisdiction of Bureau County. When planning mail delivery, logistics routing, or demographic research, 61329 operates within the Central Time (CT) timezone and supports the 851 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61329 ZIP Code Tabulation Area is approximately 20,451. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $133,329.