ZIP code 51523 is officially located in the state of Iowa, primarily serving the city of Blencoe. It falls under the administrative jurisdiction of Monona County. When planning mail delivery, logistics routing, or demographic research, 51523 operates within the Central Time (CT) timezone and supports the 717 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 51523 ZIP Code Tabulation Area is approximately 21,717. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $131,523.