ZIP code 48877 is officially located in the state of Michigan, primarily serving the city of Riverdale. It falls under the administrative jurisdiction of Gratiot County. When planning mail delivery, logistics routing, or demographic research, 48877 operates within the Eastern Time (ET) timezone and supports the 326 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 48877 ZIP Code Tabulation Area is approximately 41,626. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $49,877.