ZIP code 03821 is officially located in the state of New hampshire, primarily serving the city of Madbury. It falls under the administrative jurisdiction of Strafford County. When planning mail delivery, logistics routing, or demographic research, 03821 operates within the Eastern Time (ET) timezone and supports the 299 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03821 ZIP Code Tabulation Area is approximately Data Not Available. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,821.