ZIP code 01378 is officially located in the state of Massachusetts, primarily serving the city of Warwick. It falls under the administrative jurisdiction of Franklin County. When planning mail delivery, logistics routing, or demographic research, 01378 operates within the Eastern Time (ET) timezone and supports the 311 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 01378 ZIP Code Tabulation Area is approximately 32,511. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $66,378.