ZIP code 61345 is officially located in the state of Illinois, primarily serving the city of Neponset. It falls under the administrative jurisdiction of Bureau County. When planning mail delivery, logistics routing, or demographic research, 61345 operates within the Central Time (CT) timezone and supports the 465 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 61345 ZIP Code Tabulation Area is approximately 16,565. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $105,345.