ZIP code 47557 is officially located in the state of Indiana, primarily serving the city of Monroe city. It falls under the administrative jurisdiction of Knox County. When planning mail delivery, logistics routing, or demographic research, 47557 operates within the Central Time (CT) timezone and supports the 404 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 47557 ZIP Code Tabulation Area is approximately 20,004. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $109,557.