ZIP code 60543 is officially located in the state of Illinois, primarily serving the city of Oswego. It falls under the administrative jurisdiction of Kendall County. When planning mail delivery, logistics routing, or demographic research, 60543 operates within the Central Time (CT) timezone and supports the 770 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60543 ZIP Code Tabulation Area is approximately 26,670. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $71,543.