ZIP code 62837 is officially located in the state of Illinois, primarily serving the city of Fairfield. It falls under the administrative jurisdiction of Wayne County. When planning mail delivery, logistics routing, or demographic research, 62837 operates within the Central Time (CT) timezone and supports the 701 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62837 ZIP Code Tabulation Area is approximately 43,401. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,837.