ZIP code 48761 is officially located in the state of Michigan, primarily serving the city of South branch. It falls under the administrative jurisdiction of Iosco County. When planning mail delivery, logistics routing, or demographic research, 48761 operates within the Eastern Time (ET) timezone and supports the 590 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 48761 ZIP Code Tabulation Area is approximately 21,590. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $77,761.