ZIP code 60955 is officially located in the state of Illinois, primarily serving the city of Onarga. It falls under the administrative jurisdiction of Iroquois County. When planning mail delivery, logistics routing, or demographic research, 60955 operates within the Central Time (CT) timezone and supports the 778 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60955 ZIP Code Tabulation Area is approximately 37,178. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $75,955.