ZIP code 01031 is officially located in the state of Massachusetts, primarily serving the city of Gilbertville. It falls under the administrative jurisdiction of Worcester County. When planning mail delivery, logistics routing, or demographic research, 01031 operates within the Eastern Time (ET) timezone and supports the 506 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 01031 ZIP Code Tabulation Area is approximately 16,606. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,031.