ZIP code 49270 is officially located in the state of Michigan, primarily serving the city of Petersburg. It falls under the administrative jurisdiction of Monroe County. When planning mail delivery, logistics routing, or demographic research, 49270 operates within the Eastern Time (ET) timezone and supports the 637 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 49270 ZIP Code Tabulation Area is approximately 42,637. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $130,270.