ZIP code 05866 is officially located in the state of Vermont, primarily serving the city of Sheffield. It falls under the administrative jurisdiction of Caledonia County. When planning mail delivery, logistics routing, or demographic research, 05866 operates within the Eastern Time (ET) timezone and supports the 296 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 05866 ZIP Code Tabulation Area is approximately 14,996. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $62,866.