ZIP code 52309 is officially located in the state of Iowa, primarily serving the city of Monmouth. It falls under the administrative jurisdiction of Jackson County. When planning mail delivery, logistics routing, or demographic research, 52309 operates within the Central Time (CT) timezone and supports the 405 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 52309 ZIP Code Tabulation Area is approximately 29,105. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $93,309.