ZIP code 01012 is officially located in the state of Massachusetts, primarily serving the city of Chesterfield. It falls under the administrative jurisdiction of Hampshire County. When planning mail delivery, logistics routing, or demographic research, 01012 operates within the Eastern Time (ET) timezone and supports the 578 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 01012 ZIP Code Tabulation Area is approximately 12,478. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $44,012.