ZIP code 62002 is officially located in the state of Illinois, primarily serving the city of Alton. It falls under the administrative jurisdiction of Madison County. When planning mail delivery, logistics routing, or demographic research, 62002 operates within the Central Time (CT) timezone and supports the 477 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 62002 ZIP Code Tabulation Area is approximately 13,777. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $74,002.