ZIP code 48442 is officially located in the state of Michigan, primarily serving the city of Holly. It falls under the administrative jurisdiction of Oakland County. When planning mail delivery, logistics routing, or demographic research, 48442 operates within the Eastern Time (ET) timezone and supports the 749 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 48442 ZIP Code Tabulation Area is approximately 42,049. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $54,442.