ZIP code 03455 is officially located in the state of New hampshire, primarily serving the city of Marlborough. It falls under the administrative jurisdiction of Cheshire County. When planning mail delivery, logistics routing, or demographic research, 03455 operates within the Eastern Time (ET) timezone and supports the 446 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03455 ZIP Code Tabulation Area is approximately 40,346. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $75,455.