ZIP code 60304 is officially located in the state of Illinois, primarily serving the city of Oak park. It falls under the administrative jurisdiction of Cook County. When planning mail delivery, logistics routing, or demographic research, 60304 operates within the Central Time (CT) timezone and supports the 605 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 60304 ZIP Code Tabulation Area is approximately 23,005. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $108,304.