ZIP code 03230 is officially located in the state of New hampshire, primarily serving the city of Danbury. It falls under the administrative jurisdiction of Merrimack County. When planning mail delivery, logistics routing, or demographic research, 03230 operates within the Eastern Time (ET) timezone and supports the 580 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03230 ZIP Code Tabulation Area is approximately 43,280. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $50,230.