ZIP code 49131 is officially located in the state of Michigan, primarily serving the city of Union. It falls under the administrative jurisdiction of Cass County. When planning mail delivery, logistics routing, or demographic research, 49131 operates within the Central Time (CT) timezone and supports the 209 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 49131 ZIP Code Tabulation Area is approximately Data Not Available. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,131.