ZIP code 01038 is officially located in the state of Massachusetts, primarily serving the city of Hatfield. It falls under the administrative jurisdiction of Hampshire County. When planning mail delivery, logistics routing, or demographic research, 01038 operates within the Eastern Time (ET) timezone and supports the 266 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 01038 ZIP Code Tabulation Area is approximately 36,666. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $86,038.