ZIP code 62037 is officially located in the state of Illinois, primarily serving the city of Grafton. It falls under the administrative jurisdiction of Jersey County. When planning mail delivery, logistics routing, or demographic research, 62037 operates within the Central Time (CT) timezone and supports the 387 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62037 ZIP Code Tabulation Area is approximately 18,587. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,037.