ZIP code 48821 is officially located in the state of Michigan, primarily serving the city of Dimondale. It falls under the administrative jurisdiction of Eaton County. When planning mail delivery, logistics routing, or demographic research, 48821 operates within the Eastern Time (ET) timezone and supports the 274 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 48821 ZIP Code Tabulation Area is approximately 10,774. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,821.