ZIP code 01037 is officially located in the state of Massachusetts, primarily serving the city of Hardwick. It falls under the administrative jurisdiction of Worcester County. When planning mail delivery, logistics routing, or demographic research, 01037 operates within the Eastern Time (ET) timezone and supports the 448 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 01037 ZIP Code Tabulation Area is approximately 3,948. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,037.