ZIP code 62921 is officially located in the state of Illinois, primarily serving the city of Colp. It falls under the administrative jurisdiction of Williamson County. When planning mail delivery, logistics routing, or demographic research, 62921 operates within the Central Time (CT) timezone and supports the 405 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62921 ZIP Code Tabulation Area is approximately 23,505. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,921.