ZIP code 42120 is officially located in the state of Kentucky, primarily serving the city of Adolphus. It falls under the administrative jurisdiction of Allen County. When planning mail delivery, logistics routing, or demographic research, 42120 operates within the Central Time (CT) timezone and supports the 528 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 42120 ZIP Code Tabulation Area is approximately 5,428. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,120.