ZIP code 50642 is officially located in the state of Iowa, primarily serving the city of Holland. It falls under the administrative jurisdiction of Grundy County. When planning mail delivery, logistics routing, or demographic research, 50642 operates within the Central Time (CT) timezone and supports the 872 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 50642 ZIP Code Tabulation Area is approximately 24,672. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $54,642.