ZIP code 02478 is officially located in the state of Massachusetts, primarily serving the city of Zcta 02478. It falls under the administrative jurisdiction of Middlesex County. When planning mail delivery, logistics routing, or demographic research, 02478 operates within the Eastern Time (ET) timezone and supports the 585 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 02478 ZIP Code Tabulation Area is approximately 21,585. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $66,478.