ZIP code 62237 is officially located in the state of Illinois, primarily serving the city of Swanwick. It falls under the administrative jurisdiction of Randolph County. When planning mail delivery, logistics routing, or demographic research, 62237 operates within the Central Time (CT) timezone and supports the 616 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62237 ZIP Code Tabulation Area is approximately 23,716. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,237.