ZIP code 52037 is officially located in the state of Iowa, primarily serving the city of Delmar. It falls under the administrative jurisdiction of Clinton County. When planning mail delivery, logistics routing, or demographic research, 52037 operates within the Central Time (CT) timezone and supports the 821 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 52037 ZIP Code Tabulation Area is approximately 33,021. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,037.